It does look a little small for the size of the bag..make a bigger one if you have fabric...and of course turn under the fabric, press and sew...or you can sew 2 pieces for the pocket right sides together on 3 sides..do not sew top side, turn right side out...turn in top, press, topstitch top and sew on 3 sides...I like to reinforce my pockets at the corners...