Cut off some old boots of jeans.
Push the pin over or below the seam position and pin the zipper to the other side.
Sew together with sewing machine or hand on the both side. If you ready with these things cut the pocket if you want (the angel wing is on the packet) and sewing on the ready beauty case.
Put some decoration to your creation. (Paillette, stass, rivets or anything else what you want). I love it because all stuff in my bag was so higgledy-piggledy. Every woman accessories can fits in these and the distraught is over in my bag.