You may have find a lot of site for free template but the best is listed here.

1. www.web2feel.com visit and download the .zip file of your favorite template.

2 . Extract the .zip file.

To upload the new template follow the steps below.

1. sign in to blgger.com

2. go to layout tab--->upload new template--->browse--->select the .xml file you have just extracted---->confirm--as it may loose some third party code of you previous blog--> ok --> save the template.

3. Don't forget to download the full template before uploading the new template.

4. Hope you are done. If can't then contact me.