I cant get WP Theme to upload on server properly to allow log in

I currently have blogspot. blog being redirected to my own domain http://www.bikinibodymommy.com. I have gone through the steps to upload a wp theme into my html directory, but it is not showing up or allowing me to access log in information. I am trying to be very careful not to mess up anything with my google rank or SEO in this transition process. Any advice on what I may be doing wrong?