UCI Student with 3D Modeling Experience

Hello,
I'm a student at UCI and I have a project that I need custom parts for, but I don't know how to 3D model or print.
My project: I want to have LEDs underneath my board that change color depending on my speed, and also brightness that changes depending on which way I am turning/leaning. It is controlled by an Arduino Uno, but I want to use a Trinket Pro for the final build. I will need several parts including a mount for the circuit, accelerometer, LEDs, and the Trinket Pro. Everything electrical is ready to go, I just need a way of mounting everything.

Thank you,
Josh