Adding custom form pic for the form tutorial

Author: VesaJuvonen

docs/images/ext-forcustomizer-custom-form.png

@@ -13,6 +13,9 @@ Form customizers are SharePoint Framework components giving you an option to ove
 >[!Important]
 > Form customizer were released as part of the SharePoint Framework 1.15, so ensure that you are using the right version in your environment. See [v1.15 release notes](../../release-1.15.md) for details.
 
+> [!TIP]
+> You can find the output from this tutorial from [GitHub](https://github.com/pnp/spfx-reference-scenarios/tree/main/samples/spfx-formcustomizer-basics).
+
 ## Create an extension project
 
 1. Create a new project directory in your favorite ___location.
@@ -387,6 +390,9 @@ Now that we have created the baseline component and tested that it works properl
 
 Now the code is complete to support minimal New, Edit and Display experiences and you can test out the different experiences using different configurations for debugging.
 
+![Custom form in the context of SharePoint](../../../images/ext-forcustomizer-custom-form.png)
+
+
 ## Deployment of your extension
 
 Whenever you are ready to start using your component, there are few steps to consider related on the component association to the content type. Steps for deployment are as follows: