I need some SEO Recommend for my site!

Hello,

I have a wallpaper site. I opened this site 2 months ago, but I didn't have enough seo information.

Firstly, I'm writing all posts one paragraph and then add some wallpapers with alt and titles.
Everyday I'm posting wallpapers (1-2 post).
I'm writing 5-10 keyword for all in seo, and 3 of them for wordpress tags.

What can I do for this site for popularity? and How can I increase this hit ?

Sorry my bad English.

---------- Post added 02-15-2014 at 09:25 PM ----------

Sorry,

Here is my site: onlybackground.net

Build some links to your site

If you are using some one's wallpaper... just go to their site and give them the information that i found that your wall paper is beautiful and i have added it in the 'list of my top 10 wallpapers review' and provide your link.

Thanks,
Kamikazis