I like it, a bit plain if you have no icons like me (like to keep the desktop clean) and i wouldn't put the word abstract there, i would put my name. Bit still cool.
If you were going by the tutorial, the lines need to be more straight and it should go from one side to the other. It's decent, but looks incomplete.
My only criticism would be to fix the text spacing. Other than that, it's fantastic. Edit: And I personally would have duplicated the colored part, sharpened it, and lowered the opacity to see if it would look a little more vibrant. But that's just me, and not something that you did wrong.