Arduino MEGA2560 R3 project board

I've recently begun to learn arduino. I've started with the starter kit by Elegoo. I wanted to print a project board for the Mega2560-R3 board and the breadboard in order to work more comfortably. So I searched in Thingiverse and found the design by @davidmarshall3:

https://www.thingiverse.com/thing:3200771

Sadly I've soon found one problem: it didn't fit on my printer bed. That's why I've decided to design my own projectboard -a smaller version- from scratch. This project board is suited