Topic tweaks and TOC update for new topic

Author: Mattp123

powerapps-docs/maker/TOC.yml

@@ -210,6 +210,8 @@
   items:
   - name: Overview of sample apps
     href: ./model-driven-apps/overview-model-driven-samples.md
+  - name: Build your first model-driven app
+    href: .//model-driven-apps/build-first-model-driven-app.md
   - name: Share a model-driven app
     href: ./model-driven-apps/share-model-driven-app.md
   - name: For Developers

powerapps-docs/maker/model-driven-apps/build-first-model-driven-app.md

@@ -20,15 +20,15 @@ ms.author: matp
 ---
 
 # Quickstart: Build your first model-driven app from scratch
-Model-driven app design is a component-focused approach to app development. In this quickstart, you simplify how to create a model app by using one of the standard entities that's available in your [!INCLUDE [powerapps](../../includes/powerapps.md)] environment. 
+Model-driven app design is a component-focused approach to app development. In this quickstart, you simplify how to create a model-driven app by using one of the standard entities that's available in your [!INCLUDE [powerapps](../../includes/powerapps.md)] environment. 
 
 > [!IMPORTANT]
 > [!INCLUDE [cc-preview-features-definition](../../includes/cc-preview-features-definition.md)]
 
 ## Sign in to PowerApps
 Sign in to [PowerApps](https://web.powerapps.microsoft.com/). If you don’t already have a [!INCLUDE [powerapps](../../includes/powerapps.md)] account, select the **Get started free** link. 
 
-## Create your model app
+## Create your model-driven app
 
 1.	Select the environment you want, or go to the [PowerApps admin center](https://admin.powerapps.microsoft.com/) to create a new one.
 2.	From the left navigation pane, select **Model-driven**.