I have never done this (keep this in mind and others may correct me) BUT I was considering making my own sporran as well and have put a little thought and research into the best method.

As far as stitching, I was planning on using one of these tools to MARK my holes for stitching



http://texasleathercraft.com/proddet...p?prod=8079-05

Then PRE-PUNCH with either an awl or dremel

Then use one of these two methods of stitching:

1. Sewing Awl



http://www.emocs.com/sewingawl.htm

OR

2. Double Needle Hand Stitching




Again, this is from someone who had only put the THOUGHT into doing this and defer to others who have actually DONE it!!!!