Step 1: Materials
Step 2: Remove the Center of the Box
Step 3: Square Off the Edges
Step 4: Cut Fabric to Fit
cut around the chalk leaving a little seam allowance.
do this twice, once for the exterior and once for the lining.
Step 5: Sew the H Together
Turn the piece inside out and then top stitch all the way around, except for the opening you left.
Step 6: Put the Cardboard Inside
reach in there and unfold the box flap by flap until it is all flat laying inside the H
Step 7: Closure
Sew velcro along the tops of the H.
Now it will close and hold certain things.