1) if your backpanel came with staples and you hate staples, temporarily pin (or sew) the "de/ettes" flags to the "gender" piece with at least 2 pins on each side, THEN pull the staples out* (bonus points if you use teeth)

2) lay your precious backpanel on your jacket (text right-side-up, duh) somewhere high enough to be in-your-face but low enough that your hoodie won't cover it** and PIN THE SHIT OUT OF IT — it takes at least a dozen pins, and there is no such thing as too many pins; if you don't pin it well enough, it will buckle while you sew around the outside, and you'll have to pucker it when you're done which looks like shit; in lieu of pins, use spray glue or rubber cement to hold it while you sew

3) after pinning it all to your jacket, CUT OUT THE NECK (usually marked with a sharpie "x") — it's not part of the bloody design

4) where you go from here is up to you, but here's some things that your fellow gangsters have done:

a) machine-sew, using a wide zig-zag stitch set to short-length, first going all the way around the logo, THEN around the "de/ettes" flags (if you lack a machine, make some cookies for one of us who does)

b) hand-stitch, using anything but a running/straight stitch (because running stitches gather the fabric up when you pull them tight); whip-stitches are fine; back-stitches look baller; blanket-stitches for frankenstein enthusiasts <- you can youtube all that shit btw; if you don't have needle/thread, steal some from that queer elder you just adopted

c) motherfucking staples (long-arm stapler or else you can apparently bend them over with your fingernails)

d) mmmm rivets

e) SAFETY PIN THAT SHIT AND BE DONE WITH IT

f) don't use glue alone — your back panel will fall the fuck off