As usual, Christopher has a great walkthrough of iPadOS 14. If you've wanted to learn what's new, this is the video you want.
My biggest gripe with iPadOS 14 is the lack of widgets in the rest of your screen like iOS. The more I put widgets on my iPhone, the more the lack of this feature on iPadOS seems like a glaring oversight.
Also, check out creating a widget and then adding the Shortcuts for that application as a stacked item with the widget.