Such a gorgeous and well crafted game!
The sewing machine could definitely use some additional controls just to make it easier to control the accuracy, possibly a seperate smoother control for speed? Would also love some kind of album to see dresses you've previously made, and to be able to add more details like embroidery, zippers, lace, etc could be really fun and cool!
But it is already so gorgeous and so much fun even at its prototype stage, I can't wait to see what you guys do with it!