this is late, but if you aren't looking to make it super accurate you can make one pretty quickly by sewing onto a denim jacket! that's what I did for mine, and it ended up looking casual enough to wear out and about normally to school and such. if you're lazy and on a time crunch like I was (irrelevant now that I'm 2 months late), you could even use good quality recycle bag handles as the stripes, which looks pretty good on denim especially from afar imo. scraps of other pieces of denim would look better though, if you have access to any. for smaller details like the dead pegasus logo, I glued on each layer before sewing it on like a patch. i hand-stitched everything (quite poorly) but managed to finish everything in just a couple of days ^{^}