I can never judge if a picture is good or bad- there is no such thing.
It depends on how the image is to be used.
I can tell you if I like it or not- but that is not useful to anyone but me.
Absolutely agree with MortyCapp- the large watermarks make images essentially impossible to look at and enjoy. I can also remove it in photoshop in less than a minute.
If you are worried about people stealing your images- the only way to keep them safe is to never post them. Images stored away on your computer are safe.