This is super cool! One suggestion I have is to try to optimize the arrangement of the cut-outs to use the paper more efficiently. In some cases I think up to 2

This is super cool! One suggestion I have is to try to optimize the arrangement of the cut-outs to use the paper more efficiently. In some cases I think up to 2x the cut-outs could fit on a page. You may also want to consider trying to arrange the cut-outs so that the flat edge aligns with the flat edge of the page. Might result in less cutting for the user.