I really like the concept for this game. Like NotTodayDio, I also haven't come across a pottery game before. It does feel like it would be an excellent and unique cozy game if expanded upon and given a clearer tutorial/better controls. Unfortunately, I also found the controls a bit difficult to manage, and the exact specifications for the vases were a little unclear.
Through experimentation, you can figure out what the widest/thinnest/tallest/shortest possible vases are, and which flower of the purple-shaded flowers counted as "purple" (all of my first requests asked for a "purple flower"), but it could have benefited from some visual examples. Perhaps a stack of completed (but broken?) pottery by the pottery wheel? A wooden sign next to flower-bee labeling the flowers?
The colour palette was very well implemented (save for the flower-colour confusion), and it did run very well for a 3D browser game.