Questions covered on this page:
Where can I find the transparent logo file : transparent.png
How do I upload my full width header?
Why do I see a LOGO in front of my full-width header at the top of the blog?
Why do I see SUPER BLOG or my SITE NAME in text over my full-width header?
My full-width header is not showing on my blog, or is only showing on my homepage.
My full-width header is showing up small and in the middle of the header.
Where can I find the transparent logo file: transparent.png
You can download that file by clicking on the file name and then saving to your computer: transparent.png Also shown below - border is added so you can see the where the image is: 
How do I upload my full width header?
Why do I see a LOGO in front of my full-width header at the top of the blog?
Why do I see SUPER BLOG or my SITE NAME in text over my full-width header?