There's no such thing as "true art", as stated before, everyone has their own views on what those words mean to them. Art is all about subjectivity, so you can't say everything posted here is no good, just because it isn't your thing.
The colour of the text on the first one is a bit too tacky for me, try and avoid using really bright and obnoxious colours, they generally don't look that great, and personally I'm not really a fan of bevel and embossing, but it's alright if you're just starting out.
As mentioned before, the...
Personally, I think everything seems too big and in your face.
- The colours you use aren't that appealing and don't really make the page stand out, especially since the background image opacity is lowered
- Drop shadows like the one you've used on the sign in button are also a big no go, you...