comment on ur TPT suggetoins here:
my suggestions:
there are layers in TPT!this means u can cover ur electronics.on the left hand coner of the screen u see 3 boxes the frist one saying 'layer1' 2nd saying 'layer2' then the 3rd one saying 'wall'.the wall means it draws over all layers{yes tool wall is automaticly in wall layer!}
bigger space:
by holding shift and scolling makes the save bigger!XD
falling:
if u drag a box over something while holding right click and option will appaere saying 'fall tool'.{u can also find this in tool section}this option makes that object fall with newtons 3rd law appling![every action has a opposite and equal reaction} so u can make fling planes and stuff!XD
weight factor:
things can break and crack if too much weight is on them!XD