Find a picture that you like [or draw it. Thats what I usually do].
Print it out [or just... keep it on the sheet of paper that you drew it on].
Take the hot glue and give it a few good squeezes.
Have your Baking paper handy!
Take your baking paper [as fast as possible I suggest!] and place it over the glue.
I suggest folding the baking paper a few times so it's pretty thick and it won't burn you.
You need to press the glue down evenly. You can rub your hand over the baking paper where the glue is and flatten it evenly.
the more you push, the thinner the layer of glue will be, but the better you'll be able to see the picture.
The thicker the glue, the more stable the pin will be, but it'll become slightly more distorted. Which is alright if you're picture doesn't have to much detail.
When it cools [maybe 15 seconds or so after you flatten it. It doesn't take long], Slowly peel back the baking paper.
AHH THE WONDERS OF PARCHMENT PAPER! It never fails to astound me :D.
Carefully cut out the picture into whatever shape you want your pin to be
[btw, you can REALLY go crazy! I've done not only circles, rectangles, triangles and pentagon's, but I've done artist palates, stars, heart-o-grams, hands giving the peace sign, etc. LET YOUR IMAGINATION'S SOAR!]
Take your glue gun and glue a Pinback to the back [I always align it the way that will be easiest for me to pin on myself. So the pointy pokey part with be going left.]
WEAR WITH PRIDE!
I AM WOMAN! HEAR ME ROAR!