It looks like you used the minimum trace width for all your traces. There's no reason to use the minimums here. Up all your trace widths unless it's absolutely necessary. Especially your power traces.
Not certain what that 4.7uf cap is doing. Seems to be in the middle of nowhere. If this is a power cap, it should be inline and not at the end of a branch.
I can see several placements I would change and I would mash it down a little, but they are just finicky suggestions and nothing important. Maybe cut some of the board on the left side. It's okay for the usb connector to hang off the board a little.