First I gathered all my supplies as normal. I just made a second piece for the pocket that was a bit longer than the first.
I forgot to take a picture in the making of it, so I will just explain. I sewed the thicker white ribbon to the top of the pocket and then glued it all on there like normal. It was pretty straightforward. Next time, I think I should make it with elastic so it will stay down. This time I just let it pucker out a bit so the diaper can be shoved in there. We'll see how well it works. This is the view from the back.
Nothing fancy, but I think it looks cute. I love the white polka dots on black. I added some ribbon on the front and that is that. I hope she likes it!
***Update: So I had a request for dimensions for the larger piece I cut for the pocket. Honestly, I hate to admit, that I really don't know. But the original piece to cover the wipes case is about 8 1/2 inches long and 4 7/8 inches wide, or the same size as the wipes case. If you have never made one before, you also need quilting batting to go between the fabric and the wipes case. Hot glue that on first, then the fabric. The piece I cut for the pocket was about 9 inches long and 7 inches wide. This gave me some room to make a hem and allow for the give. Again, if I was to do this in the future, I would cut it even wider and make an elastic edge so it stays down better. Remember, you can always cut the fabric shorter if it's too long, but you can't make it grow once it's been cut! So be gracious with your seam allowances! And since you will cover all edges of fabric with ribbon, you will never see your wanky cutting lines! Good luck and hope this helps!