Add a sticker border to a vector shape in Figma

I've attached a .fig Figma file here. It has a vector shape. I started adding a rounded sticker background to it, but just have no time to complete, or improve it. I need a Figma expert to complete this simple task.

Please DO NOT OVERBID. I know how long this task requires, and overbidding is just a waste of your time!

I have a second paid project to follow this immediately, for the successful bidder