Hi i want to attach two leather straps with buckles to a old Barbour jacket either side. I've lost some weight and the jacket is far too big for me , the idea is to pull the sides and back in round the waist at the rear. I was thinking of hand sewing them , is there anything i need to consider, i'm new at sewing and only know the saddle stitch technique, just wondered if i need to reinforce with a piece of leather on the inside . I don't have any photos to explain what i mean so i apologize if i haven't explained myself well .