It’s very easy. At first make sure you have signed in your Blogger account.
Then just read the text here and if necessary click the images to see them larger.
First choose “Design” and “Template Designer”
TEMPLATES: Choose template “Awesome inc.” (it’s the third template) and click APPLY TO BLOG.
BACKGROUND: Choose Background and remove the background image and click APPLY TO BLOG.
LAYOUT: Next choose the LAYOUT you prefer. In this example I choose 2 columns. We’ll be back to “Adjust widths” next, but let’s make this first.
ADJUST WIDTHS: You can choose how many px is your entire blog. If you have 2 columns blog, my backgrounds are usually suitable for max. 780px.
ADVANCED: Here you can choose your font, the text size etc.
The most important thing here is to remove the background areas that don’t belong to my background.
You can of course leave to your blog the awesome.inc post- and gadget backgrounds (they're those dark boxes, as you can see in the image) if you want.
Now I show how to remove those boxes from your blog: Choose Post background. Watch instructions in the image below.
Do the same thing with Gadget Background.
If you don’t want any background or border in the images on your blog, choose Images and change the background and border colours to transparent.
I hope this was helpful. If you have any questions, please leave a comment.