There are many places online that you can get free backgrounds, templates and headers for your blog. One of my favorites is thecutestblogontheblock.com They have tons of free backgrounds and a few templates. For my blog, I used Plumrose Lane. I purchase the header from her on Etsy but she has free backgrounds on her website as well.
All you need to do to install is add a gadget and put the code in from their website. :)
Hope this helps,
Oh my gosh so nice of you Jasmine!
I would love your help if you have the time of course I understand if you can not.