Creating my first-ever sewn bag pattern

I feel like I've done enough practicing on other people's patterns, and I'm raring to work on my own design. I haven't gotten to play much with curved shapes yet, and I had an idea for a curved hobo bag about 15 years ago (when I didn't know what I was doing yet) that I really want to improve on. 

I drew it all out on the computer and printed and cut out the pieces with the ring pull hardware I want to use on it. Here's what I'm thinking: