I've been making shooting bags and accoutrements for 30+ years,and with Ken Scott giving a post graduate class on pouch making,well,my learned experience can now be had by anyone taking Ken's highly recommend class.
Even though I grew up restoring antique furniture,and made a great career of it,I still listen to others on the subject,just in case I can add to my 50+ years working. NEVER quit learning.
I took Kens class,and am not ashamed to say,I did learn quite a bit,and I also shared some of my tricks too. Not many,but a few.
Anyone who took Kens class should be able to help you. Just ask for detailed pics of their work. I'd be happy to show mine.