diff --git a/README.md b/README.md
index fd630c3..f6cc37e 100644
--- a/README.md
+++ b/README.md
@@ -44,21 +44,6 @@ auth, err := c.VoidAuthorization(authID)
 auth, err := c.ReauthorizeAuthorization(authID, &paypal.Amount{Total: "7.00", Currency: "USD"})
 ```
 
-### Get Sale by ID
-
-```go
-sale, err := c.GetSale("36C38912MN9658832")
-```
-
-### Refund Sale by ID
-
-```go
-// Full
-refund, err := c.RefundSale(saleID, nil)
-// Partial
-refund, err := c.RefundSale(saleID, &paypal.Amount{Total: "7.00", Currency: "USD"})
-```
-
 ### Get Refund by ID
 
 ```go
@@ -74,7 +59,11 @@ order, err := c.GetOrder("O-4J082351X3132253H")
 ### Create an Order
 
 ```go
-order, err := c.CreateOrder(paypal.OrderIntentCapture, []paypal.PurchaseUnitRequest{paypal.PurchaseUnitRequest{ReferenceID: "ref-id", Amount: paypal.Amount{Total: "7.00", Currency: "USD"}}})
+ctx := context.Background()
+units := []paypal.PurchaseUnitRequest{}
+source := &paypal.PaymentSource{}
+appCtx := &paypalApplicationContext{}
+order, err := c.CreateOrder(ctx, paypal.OrderIntentCapture, units, ource, appCtx)
 ```
 
 ### Update Order by ID
@@ -130,7 +119,7 @@ payout := paypal.Payout{
     },
 }
 
-payoutResp, err := c.CreateSinglePayout(payout)
+payoutResp, err := c.CreatePayout(payout)
 ```
 
 ### Get payout by ID
@@ -239,6 +228,7 @@ c.GetCreditCards(nil)
 ```
 
 ### Webhooks
+
 ```go
 // Create a webhook
 c.CreateWebhook(paypal.CreateWebhookRequest{
@@ -287,22 +277,22 @@ c.GenerateInvoiceNumber(ctx) // might return something like "0001" or "0010".
 invoice, err := c.GetInvoiceDetails(ctx, "INV2-XFXV-YW42-ZANU-4F33")
 ```
 
-* for now, we are yet to implement the ShowAllInvoices endpoint, so use the following cURL request for the same(this gives you the list of invoice-IDs for this customer)
-    ```bash
-    curl -v -X GET https://api-m.sandbox.paypal.com/v2/invoicing/invoices?total_required=true \
-    -H "Content-Type: application/json" \
-    -H "Authorization: Bearer <Token>" 
-    ```
+- for now, we are yet to implement the ShowAllInvoices endpoint, so use the following cURL request for the same(this gives you the list of invoice-IDs for this customer)
+
+  ```bash
+  curl -v -X GET https://api-m.sandbox.paypal.com/v2/invoicing/invoices?total_required=true \
+  -H "Content-Type: application/json" \
+  -H "Authorization: Bearer <Token>"
+  ```
 
-* refer to the beginning of this Usage section for obtaining a Token.
-    
+- refer to the beginning of this Usage section for obtaining a Token.
 
 ## How to Contribute
 
-* Fork a repository
-* Add/Fix something
-* Check that tests are passing
-* Create PR
+- Fork a repository
+- Add/Fix something
+- Check that tests are passing
+- Create PR
 
 Current contributors:
 
diff --git a/order.go b/order.go
index 4d4241a..9f6e56f 100644
--- a/order.go
+++ b/order.go
@@ -23,10 +23,10 @@ func (c *Client) GetOrder(ctx context.Context, orderID string) (*Order, error) {
 	return order, nil
 }
 
-// CreateOrder - Use this call to create an order
+// Create an order
 // Endpoint: POST /v2/checkout/orders
-func (c *Client) CreateOrder(ctx context.Context, intent string, purchaseUnits []PurchaseUnitRequest, payer *CreateOrderPayer, appContext *ApplicationContext) (*Order, error) {
-	return c.CreateOrderWithPaypalRequestID(ctx, intent, purchaseUnits, payer, appContext, "")
+func (c *Client) CreateOrder(ctx context.Context, intent string, purchaseUnits []PurchaseUnitRequest, paymentSource *PaymentSource, appContext *ApplicationContext) (*Order, error) {
+	return c.CreateOrderWithPaypalRequestID(ctx, intent, purchaseUnits, paymentSource, appContext, "")
 }
 
 // CreateOrderWithPaypalRequestID - Use this call to create an order with idempotency
@@ -34,20 +34,20 @@ func (c *Client) CreateOrder(ctx context.Context, intent string, purchaseUnits [
 func (c *Client) CreateOrderWithPaypalRequestID(ctx context.Context,
 	intent string,
 	purchaseUnits []PurchaseUnitRequest,
-	payer *CreateOrderPayer,
+	paymentSource *PaymentSource,
 	appContext *ApplicationContext,
 	requestID string,
 ) (*Order, error) {
 	type createOrderRequest struct {
 		Intent             string                `json:"intent"`
-		Payer              *CreateOrderPayer     `json:"payer,omitempty"`
+		PaymentSource      *PaymentSource        `json:"payment_source,omitempty"`
 		PurchaseUnits      []PurchaseUnitRequest `json:"purchase_units"`
 		ApplicationContext *ApplicationContext   `json:"application_context,omitempty"`
 	}
 
 	order := &Order{}
 
-	req, err := c.NewRequest(ctx, "POST", fmt.Sprintf("%s%s", c.APIBase, "/v2/checkout/orders"), createOrderRequest{Intent: intent, PurchaseUnits: purchaseUnits, Payer: payer, ApplicationContext: appContext})
+	req, err := c.NewRequest(ctx, "POST", fmt.Sprintf("%s%s", c.APIBase, "/v2/checkout/orders"), createOrderRequest{Intent: intent, PurchaseUnits: purchaseUnits, PaymentSource: paymentSource, ApplicationContext: appContext})
 	if err != nil {
 		return order, err
 	}
diff --git a/types.go b/types.go
index 6d07587..a8df203 100644
--- a/types.go
+++ b/types.go
@@ -1051,8 +1051,9 @@ type (
 
 	// PaymentSource structure
 	PaymentSource struct {
-		Card  *PaymentSourceCard  `json:"card,omitempty"`
-		Token *PaymentSourceToken `json:"token,omitempty"`
+		Card   *PaymentSourceCard   `json:"card,omitempty"`
+		Token  *PaymentSourceToken  `json:"token,omitempty"`
+		Paypal *PaymentSourcePaypal `json:"paypal,omitempty"`
 	}
 
 	// PaymentSourceCard structure
@@ -1067,6 +1068,22 @@ type (
 		BillingAddress *CardBillingAddress `json:"billing_address"`
 	}
 
+	// PaymentSourcePaypal structure
+	PaymentSourcePaypal struct {
+		ExperienceContext PaymentSourcePaypalExperienceContext `json:"experience_context"`
+	}
+
+	PaymentSourcePaypalExperienceContext struct {
+		PaymentMethodPreference string `json:"payment_method_preference"`
+		BrandName               string `json:"brand_name"`
+		Locale                  string `json:"locale"`
+		LandingPage             string `json:"landing_page"`
+		ShippingPreference      string `json:"shipping_preference"`
+		UserAction              string `json:"user_action"`
+		ReturnURL               string `json:"return_url"`
+		CancelURL               string `json:"cancel_url"`
+	}
+
 	// CardBillingAddress structure
 	CardBillingAddress struct {
 		AddressLine1 string `json:"address_line_1"`