Thank you also!
I wanted to add that maybe just sewing the slots together and the top corner could be rivited. this way you have behind the slots as holder as well. I was even thinking that sewing the bottom left slot all the way around to the T slot or just another slot cutting out a window, leave it plasticless and have a slide out id space. since the extra room of behind the slots will be there. Just suggestions. im gonna throw these on autocad and play with the design a little and post the finished piece. if it turns out great ill post the template with a definite shout out of gratitude to ducjes for the original template.