This just might be from the angle, but in model 1 the bottom shelf looks like it’s gap between it is off from the others. The border between too looks like it is bigger than the other. Like the others said, there is a lot of Z-Fighting (Overlapping parts). Try not to put parts in the same position or else they look weird.
The tv stand is nice as well, I would just critique the size of the TV relative to the stand. Usually if someone would be ordering such a large tv stand, they would have a large TV to go with it. The TV being small and next to the console causes it to be offset and leaves a large uneven section of white behind it. I would suggest marking the TV larger, centering it with the wall behind it, and possibly even mounting it to the wall rather than using a stand.