Don't sell yourself short! Anyone can do it if you have the right tools and a good teacher. I do have a great idea though, you're in high school, right? Is there a wood shop class you can take? I made one of my smaller(still pretty big but smaller than the ones I made on my own) cages as a project for my class. The nice thing was, I got to make something I really wanted to make anyway, and got high school credit for it, plus, since it was wood purchased through the school, I only had to pay for the finished wood. I don't know if all schools are like this, but at mine, when you made a project you were charged only for the wood you actually used in your project, unlike going to a home depot where you are buying the entire board, and whatever scrap is left over is your own loss. Then you would have professional grade tools at your disposal, an instructor right there to help you and you get the cage you want!