I had misplaced the U1 in the pcb so I had to move it in order for the start of the usb socket to be at the edge of the pcb. After I moved the U1 I had to rewire some wires in the pcb and afterwards I ran the test and everything was fine. I saved the file and then I saved the pcb as gerber file to check how it looks on jlcpcb. I then moved onto Fusion and started the case. I created a base after I measured the size of the pcb on kicad and made another rectangle 3 mm larger on each size. I then extruded the larger triangle and moved the pcb step file and the lcd onto the case and checked if it fits.