Oh my God! What's with all the crappy colours and font faces and varies sizes and ugly screenshots and bad layout?
No offense, man, but not many people will be reading your article, no matter how good it may be. I'd intended to, but it is impossible.
You have to work on the design. Just simple text, aligned to the left with the parts you want highlighted in bold. Use no colours and only one contemporary font like Helvetica or Verdana or some such. Use pictures only where necessary and use better highlighting tools (get rid of all the ugly green and red and blue ovals and circles). Also, the theme (of the operating system you're using in the screenshots, not the blog) looks crappy. Stick with the default (which isn't much better either but anything other than the one you chose is an improvement).
I generally would post something positive to go along with all the harsh criticism but I'm sorry, I couldn't find anything good about it.
Disregard all the free advice if you aren't interested.