I have made quite a few bow tucks and mini bow tucks and want to advise that the handle is sometimes a little small if you are a fluffy(larger) person.
I now make most of my bags with a 27" strap, it is more comfortable to wear and the bag seems to hang in a good spot.
Use good quality material and it will last a long time!
Good luck and have fun with it!!!
They are really great bags!!!