GWC is the guy who is shooting just to see attractive young women (or men) nekkid. It has nothing to do with skill level, some GWC's are extremely skilled and produce beautiful work.
Having said that, your lighting needs a lot of work. It doesn't look like you planned the lighting, you just took it however it came out. I'd go about fixing that, ignore what some local hater says.
David M. Converse