That's my first slefmade model i ever drew. It worked quite well for me(as an absolute noob). It just didn't print some surfaces and edges or better say the grip for the thumb as clean as i wished(Picture 3).

But i guess that's due to the fact that i'm new to drawing and don't now the tricks to smooth edges or surfaces, yet. Also i'm relatively new to 3D printig at all.
So i'm greatful for your input!!

The tray is for shots with a diameter of 45mm on the bottom, about 48.6mm on the top and 61mm in hight. so it's quite specific in that case.