Paddle shifter for sim racing

Part of my bechlor's degree and is part of a steering wheel. I went throug a couple iterations trying to minimize the size and materials used. The model is planed to be made out of aluminium but it can aslo be used as printed. you would need a couple of extra parts such as momentery switches (https://amzn.eu/d/8T8uAxq) and a pair per shifter of magnets 12mmx 2mm and a shaft that goes through the big holes. And a few m3 bolts to screw the switches on the model and the paddle to the end of the arm. Boost MeSupport me and my work, please