I just finished a mini project of adding a mesh screen to the top of a plastic tub. For the screen part (visible on the underside) I used a thick mesh, and glued it down with special plastic glue. Then I added a layer of cardboard over that, and then reinforced it with tape (with no sticky parts out)....then I covered the tape with a cardstock paper.

I'm new to this all.....and I don't want my girl to escape. Any suggestions for improvement?