Anybody know how to make a homemade bey layer???

So has any one ever made a homemade bust bey/ layer before???
Because I was working on one an
dont know would be fun an cool to use
to make a layer out of 
Cause the one I made is always
off balance because the bottom part
of the layer is uneven so yeah help
me out if u can 

(I hope this isn't something I can't post haha I'm new here)
Ironically, there's been a bit of a craze lately about 3D-printed Beyblade layers that fits this bill perfectly, as long as you can find somwhere to print it. Might be better to ask in this thread over here: https://worldbeyblade.org/Thread-3d-print-Bey-Archive
I had made a burst layer with cardboard ( but , unfortunately it teared too soon , and I had to threw it , 18 DAYS HARD LABOUR , GONE )