Making customized blog tabs for your Blogger Blog

I used to see so many blogs with really cool page buttons for their blog.  But Blogger's standard buttons are just so boring!  I searched and searched for a tutorial to change them, but really didn't even know what search terms to use.  I eventually found a great YouTube tutorial that showed me how to do it.  Puglypixel uses Photoshop, so I thought I'd write a post on how I do it with GIMP.