Nintendo switch black joycons

This is a model I did of the black joy con version of the Nintendo switch, it’s really low poly and I was a bit rushed, so the proportions and curves aren’t quite correct, and is missing some detailed. Here it is!

https://www.cgtrader.com/free-3d-models/electronics/other/nintendo-switch-black-joy-con-low-poly

Let me know in the comments what I can improve on in my 3D modeling skills, I’m a beginner.