Group pen or pencil content together to create your own custom stickers:
Tap
or 
and draw around the separate pen or pencil content that you'd like to combine together.Click/tap inside the drawn circle, and a menu will appear.
Select Group
You can now make changes (move, scale, rotate) to the items as one.
Select Save and go to Stickers. Your saved sticker(s) will appear under My Stickers, and you can use them in any note.