Block Party Final Project - Progress so Far

So, the last time I updated you guys on my status, I had mentioned that I stripped the panels on my other project I was going to recycle for the usage of this one. Well, I've cut my project down in size, but I made a mistake with one of the panels, and then realized the whole thing needed to be smaller. I'm basically going to spend the entire weekend trying to figure out how to fix my mistake. I've started building the compartment for the pull out mat but it's having trouble sticking to the board because I couldn't remove the tissue paper. I have a spare poster board in case of back up.