Print your pattern. You need two copies of the large piece. Cut and tape one of those large pieces to the flap piece to form the back piece. The leftover piece is your front piece.
Fold your fabric and lay the pattern on the fold so that the straight edge is on the folded part. Cut out 1 front and 1 back piece in each fabric for a total of 4 pieces.
Pin your Velcro (about a one-inch piece) in place. One piece goes on the front part of the main fabric. Just center it about 3 inches down from the top.
The other piece of Velcro goes on the top flap part of the back piece on the inside fabric, centered on the fabric about 1 inch from the top.Sew your Velcro in place by sewing around all 4 sides.Now put right sides together on both pieces and sew them together around the sides and bottom.
Now, turn your inside fabric right side out and stick it down into the outside fabric, so that right sides are touching. Turn inner fabric right side out (For further clarification I am adding in some more photos at this point. That’s why there a new and different fabric in these pictures.)
Put the inner fabric into the outer fabric.Flip your fabric over and begin sewing the 2 pieces of the flap where shown in this photo.
Here it is in my sewing machine just as I am starting to sew.
Sew down that side until you get to the part where the front and back piece join across the middle. Sew across those two making sure that you are only sewing the front of the bag and not the back. (So you should be sewing 2 pieces of fabric, not 4.) Then sew across the middle and up the other side.
You are leaving the top of the flap open so that you can turn it there.
Turn it right side out. First, reach in and pull out the inner fabric.
Then turn your outer fabric.
Now tuck your inner fabric down into the outer part.
Until it is all inside like this.
Push out all the corners and make it nice and smooth and then press it flat.
Fold the top opening under and top stitch it shut.
Now press the whole bag nice and flat. And you’re done!