Eachine Trashcan case Insert

My Trashcan came squashed so wanted something to support the edges of my case but it turned into this. Its the first thing Ive really designed on Fusion 360 or any 3D program so any suggestions appreciated. I originally wanted to print in TPU so nothing rattled in my backpack but had real issues with it peeling off the bed. I ended up printing in PLA but decided to use some tail ends of rolls and samples I had. Ideally Im going to design some TPU parts to stop any rattles and noise.

I printed