Here is a small paintpad tute I made for the skipping bag. Any modifications can be made: if you don't like the idea of a seam right on the strap, make the strap separately and then you'd have 3 pieces for the lining: the strap, the upper curvy part and the bottom rectangle. The outside can be made just on the regular pattern. When you have the purse zipped  closed, you'll see the zipper teeth (though you can make a flap that covers them if you prefer, and add it to the zipper sandwich over the teeth) and the lining that is over the zip, so you could make the bottom lining in a different contrasting fabric.



1. I made a different pattern for the lining and main fabric because it is easier to stick zippers on flat, separate pieces of fabric, but with some experience you wouldn't have to place the seam on the end of the zipper, but on the middle of the side.  Remember to add seam allowances on the vertical seam that runs through the strap and on the part where the two linings join with the zipper.
2. Cut the pieces: 2 main body, 2 upper lining, 2 inferior lining and 1 bottom rectangle of the main fabric and 1 bottom rectangle from the lining. 

3. Make a zipper sandwich: upper lining right side up, zipper with the teeth facing the upper lining and the bottom lining over that. Match the fabric edges with the zipper tape, open the zipper  and sew with the zipper foot. Make a zipper sandwich with the other parts of the lining and sew it as well. Buy the zipper longer than you need it. Then when you sew it, sew the bottom (where the zip is joined together) first, and after you sew the bag you can trim the edges off. You'll now have the two pieces of fabric joined by the zipper that is stuck between the upper and lower linings. You should be able to zip it closed at this point. With the zipper closed, the right sides of the fabric should be together and sew both sides closed. NOTE: make sure the zipper pull is INSIDE the bag. Cut off the excess zipper tape.

4. reopen the zipper and proceed as you would with a bag with no zippers.


Listo!

Cut your pieces of fabric. light colors are wrong sides, dark colors are the right sides. pink lines are stitching. embelish and vary the designs of the flap, colors, etc. If you want to add lining, cut the bottom pieces out of the lining, make a copy of the pocket and with wrong sides together sew it down to the bag. Instead of cutting out two pieces of the flap, cut one out of the main fabric and one out of the lining. If you're unsure of pocket dimensions, try this in paper to see what size looks good for what you need it.

2. sew the long strips together on the short sides and iron a border on one side. Take the unironed edge and stick it right sides together to the bottom edge of your pocket. When you get to the corner, you can lift the presser foot with the needle still in the fabric, turn the pocket, put the presser foot down and continue sewing up one side. Repeat at the opposite edge. Clip the corners to make turning easier.

3. with the upper edge *the blue rectangles*, put them right sides together and sew around 2 short edges and one long one. Turn right side out and you can topstitch the edges if desired.

3. Turn the pocket right side out and here you can fold over the upper edge and make a hem. You can topstitch this upper hem and all around the edges if you want the decorative stitch look that appears on your inspiration piece. Then place your pocket right side down on the purse. With the ironed under hem on the long edges , position the strips on the fabric using the same dimensions as the upper rectangle. Sew it down on the outside. NOTE: This should be done before making the bag and adding linings, that way the lining on the bag will cover the stitches on the inside.

4. Position the upper flap with the side that will overlap and where you'll place the button or snap facing up. Stitch it down a little bit above the pocket. trim the seam allowance. Then turn the flap down so it covers the pocket and sew the upper edge , covering the cut seam and seam allowance. Then insert the snaps or buttons or velcro. NOTE: if you will sew a buttonhole, do it before you sew the flap to the bag.


5. Voila!