I love this natural linen and cotton cosmetic bag, linen zipper pouch. I use them for everything from cosmetics to office supplies and even the kids accessories. DIY tutorial and pictures for a easy sewing project.
Great phone wallet design - would be easy enough to duplicate. I would eliminate the binding (since mine would be a mess, lol) and just sew a backing on RST. The zipper pouch could be the kind from Michelle Patterns Zip Pocket Pouch.