Wow I did so many of those when i was 12 or around that age. Mostly I tried copying the Amiga Workbench on my +2A (the gray one).

Obviously at that age my knowledge of coding and window managers wasn't exactly deep and i mostly only had seen other OS from magazines. I don't think I even knew what 'drag-n-drop' was and was a bit confused at what the Trash bin should do (i loaded code from tapes).

Good times i guess :)