How to do it
For larger bag, cut 5 pieces of felt: one 2 3/4 by 4 inches, one 3 1/2 by 5 inches, one 8 1/4 by 10 inches, and two 13 by 14 inches. (For the smaller bag, omit the two 13-by- 14-inch pieces and cut two 8 1/4-by-10-inch pieces.) Cut webbing into two 24-inch strips. Pin smallest piece of felt to center of next-largest piece. Sew along sides and bottom with a 1/4-inch seam. Repeat, pinning and sewing those pieces to next largest, and (for larger bag) then again to largest. (This is front of bag.)
Fold ends of one webbing piece under 1 inch, and pin in place to left and right of largest pocket. Sew in place with a square and an X, as shown. Sew other piece of webbing to felt piece that will be back of bag. Sew front and back of bag together with a 1/4-inch seam.