This is what I did:
I measured how long and how wide I would like my belt to be.
I cut two pieces of fabric to the size I needed.
I also cut 1 piece of very heavy/thick interfacing.
I then ironed on the interfacing to one piece.
With right sides facing together I sewed the two pieces of fabric together.
I sewed at an angle on the corners of one end to give the belt a pointed end.
Leave the opposite end open to turn the belt right-side-out.
Turn right-side-out and press.
Tuck the open end in and sew closed....
I sewed some buttons on and made buttonholes.
You could always buy actual buckles or even D-rings if that is your preference.
I was going to go the D-ring route but couldn't find any wide enough for what I wanted.
Look for Pictures of us in our homemade clothes tomorrow.