Hi Rod....Welcome !!!
If you are going to make your own, I would recommend a couple of books;
The Kentucky Rifle Hunting Pouch, by Madison Grant
Recreating the 18th Century Hunting Pouch, by T. C. Albert
Both are available from TOTW and both have details as well as good pictures for reference....
I shoot right handed and carry my horns and hunting bag on the left side, my hunting knife is in front with my belt axe on my back left hip...if I am carrying a haversack, that is over the back right hip...I don't like anything on my right side, except my gun while hunting to allow me quick, quiet and easy movement...