Now you choose the theme you want for your blog. Click on Show More Themes to view more options until you find one you like. Remember that while most themes are free, others are available for purchase and will be marked as such with a price.
The design and layout for any theme you select is already set and cannot be altered. But you can change the look and feel with background colors, font, content, pictures, etc. that you want to make your blog more unique.