quite nice, i don't like the bracers (pipes) , i would use some other parts there.. and the flip glitches (since that should just work in the vanilla game and not need that flip and cancel)
The key to it is dropping the piece in unattached first then after its dropped then pick up and do the snap, flip, flip back, then cancel. if that makes sense. I had trouble at first because I just grabbed the piece and tried to attach it without dropping it first.
