1) The shape of Yoda is much smaller than all the others. That is why these should also be Cookes baked separately. Otherwise, the Yoda-ears are too dark, while the other biscuits are still light.
2.) The plastic is really not stable. The pressure on the punch for pressing the "features" should therefore not be too large. Otherwise, it may happen that the punch breaks (unfortunately happens at Vader).
But all in all making cookies large and small Star Wars fans a great pleasure.