I just started an site , Which Provide info about action figures and also sale them in low cost. You can view that here.
Action Figures Toys

I used a free wp theme and update that. few of my friends says it's so greenish and not looking good, Do you guys also feel that.
I worked on Navigation and on page optimizing. Any suggestions for making it more optimized so come in batter rank on SE's ?

Well, the green color looks ok to me, so does the layout.

All I'd suggest is to pass your pages through the HTML validator and CSS through W3C CSS validator.

Thanks for your review Frederiek. I am not at all good with CSS, Will try any freelancing site to get someone to fix that

The reported CSS error is only a typo. On line 468, your "#content .post .post-title h2 a" color rule has one character too many: color: #2B71004;.

And the most of the reported markup errors have to do with you using a XHTML DOCTYPE, in which all elements, even empty ones (such as <img>, <br>, etc) need to be closed. The links in the validation results point to relevant pages in either the WDG HTML reference or the W3C site.

So I don't think you need to hire someone to fix it for you. If you do it yourself, you'll get some more understanding of HTML markup.