Well done cowboy.
It might be the photo but on the green bottom half where it joins the centre band it looks a little jagged, do you use a barrel trimmer? Pen Making - - Barrel Trimmer
To edit photos online use something like this Photo editor online - Pixlr.com edit image use " crop " and there will be a resize option somewhere.
If using iPhone use apps like.....
"Snapseed" to crop and " simple resize" both free.