Not a huge fan... Fix up a bunch of these:
- Shadows aren't consistent, this gives the effect of a bullshit light source/loses realism.
- Consistency with fonts, going from what looks like Trajan/Georgia to Arial doesn't work buddy (learn about fonts properly before combining serif/sans serif, and different types of these).
- Arial = Not cool. Buy/Download Helvetica and use for the rest of your life.
- Seriously, don't use Arial, it has just about as much professionalism as Jokerman or Impact, in terms of font.
- The buttons can be far more web 2.0/3.0 -> pay more attention to detail. 2px borders can help a lot, shadows and lightsource needs to be taken into account. Think about textures also - you've used grain for the background so texture could work nicely.
- Submit Information (the actual text) isn't centered vertically - don't center according to the top of capital letters, but the lowercase letters, it looks more pro.
- Gap between the logo/name and the actual input fields seems awkwardly large, cut down by like 20px
- 'Register an account' seems unpro. No shadow, no arrow, no symbol, no capitalisation - attention to detail, and making shit seem pro graphically is what separates pro sites from amateur sites. If you uploaded this in normal form, it would seem for the register an account thing that you coded in plain HTML because you don't know how to use css, or that you don't want to put the effort in. If you're leaving it as it is, at least make it a button, not just plain text. It also looks too bright, and takes away from the input fields - make it slightly duller/reduce the saturation and add lightness.
- Shadows on the top logo/slogan thing are too small and too sharp, with the light source you've tried illustrate, imagine where it would be, and picture what the shadow would look like. It would be roughly 3px, distance of like 1px, and far lighter/softer (as the light isn't harsh).
+ Colour scheme seems alright.
+ Positioning/placement seems alright.
+ I'm guessing it's still WIP, so far it hasn't got any awful flaws.
^ Completely my opinion/experience/2 cents - don't take it to offence and take from it what you will.
Edit: Also white dots on bg.. get rid of those.