Well, sorry but this only works with some themes. But if you like the transparent theme like I have then look no further!

1-  Set Modularity Lite by Thad Allender as your theme.

2- Go to My Account>Appearance>Background

3- Choose the file you want from your computer.

4- Upload (Please keep in mind the example it shows isnt always the size it shows.

5- Go back to Appearance>Header

6- Choose file from your computer (You will most likely need to crop your photo, just set your favorite part inside the rectangle.)

7- View your blog and be sure all is correct. If you have any problems at all feel free to comment, or email me.