you're not thin
but you're not fat tbh
however, you could do with loosing weight just so that you look better withut clothes
if you wore the right kind of clothes i.e. loose top and trousers I think most people would see you and say you were average however with your top off you can see you have a bit of excess weight on your stomach.
It's no big deal though. There are people who are far heavier than you and loose weight and look great.
In short just eat healthy, cut out any junk and up the exercise. You'll be looking great in a month or two.