Common mistakes

Screen issues

Be very careful with the TFT_eSPI library. If it gets updated, there's a possibility that it will overwrite the User_Setup.h file, altering all the screen settings and pins.

Assembly issues

Pay close attention to the clearances you use in the printed parts; these are crucial to avoid problems during assembly and enable you to skip post-production for the various pieces. There are no truly critical pieces, so even if you make mistakes, a file is often enough to fix the issue.