this instructable is based around my ipod touch but your can still make one for any ipod.
please see my first ipod hoodies instructable too http://www.instructables.com/id/MAKE-YOUR-OWN-IPOD-HOODIES--P/
what you need:
fabric of choice
sewing machine (optional)
Step 1: Cut out pattern
and cut out a flap on the bottom about 3/4 of an inch long and a square shape thing for the hood
i hemmed the fabric i was using because i tended to fray
just sew along the edge to do this
Step 2: Start sewing!
sew the zipper so that the thing you pull is on the top
you may have to shorten the zipper to do this see my other instructable to do this.http://www.instructables.com/id/SUZKRPNFGIAG9P9/
then sew the flap on over the end of the zipper i just did this by hand sewing
and finnaly sew the hood together
sew the top of the hood together and sew the flaps on ether side of the zipper
Step 3: Decoration
i did this by getting a sheet of no sew adhesive from my local craft store and putting it on the back with a piece of white fabric on the back
you can do what ever you want embroider it or whatever.