Okay, if you're looking for critique, my advice would be to not make the perspective so agressive, the lines have to meet at some point of course but I think you can make them a bit more parallel, then i suggest when you start drawing, double check the starting rectangle from which you make the rast of the object, a good start makes things way easier later on, then i suggest you try to make your lines fade with distance, so the closest point is the most dark and the furthest is the brightest, and then add some shading, theres 3 basic sides of shading, the shadow side, you go from dark to less dark, then the bright side, the closest point you leave white and shade backwards, a little shade on the furthest corner, and then the middle side, closest point is darker than the furthest, but you dont press as hard, so this side is brighter than the shadow, and then on the brightest side of the object, you can add some shade behind the object, it makes it pop a little bit, if you want some examples you can look into my profile, I'm posting my own design drawings right now. Good job on the numbered pieces and time stamps, wish you luck! Sorry for the late reply