While a nice idea, the controls weren't properly coded - Q and E did nothing for me, despite the tutorial insisting they were a viable alternative to the mouse wheel for swapping between tools, and I couldn't get rid of the green highlighted frame after correctly remaking a shape - and it also failed to really live up to the theme - recreating the same shape in the exact same way but next to it is not symmetry or mirroring, it's merely duplicating.
Again, a nice idea with some great potential if you can work out the kinks, but it didn't really match the theme this time.