Help moving author image and details in article

[AMAlonso64]

Hello,

I have a test article using the default blowfish article layout (which I understand is single.html), as shown below:

I would like to move the author information to the left-hand side of the page, instead of having it in the same column as the main content. Is there a way to do this? Something like this:

Also, how can I adjust the positioning and width of the table of contents? How about the width of the main content?

Any assistance is appreciated :)