Denim Ipad Bag Sewing Project

I made this denim ipad bag for my husband. On the first day of wearing this bag, his friend wants this bag so my husband gave it to him. I need to make something like this again, but with better technique. I will use denim-thread instead of regular cotton thread. I will attach the zipper in proper position to make it stronger. I will add the key strap, my favorite feature of a bag.

Material is from scrap denim fabric cutted from bottom of a jeans. You can see it in the photo below.