/ic/ - Artwork/Critique

>>6652592
Obviously perspective. But you already knew that because you've clearly practiced it a ton. You just need to work on it even more, the outside window and the back tiles look choppy.

But another thing, you need to get even better at designing original stuff. This process can be pretty fun and honestly it's a great perspective practice too, since it's all about shapes. I recommend pic related, or studying design principles from guys like Raymond Leowy. I think you're pretty good, you can only get better now by drawing everything you draw well already even better, and more precisely.