And it doesn't really look like you did anything, more or less looks like you just cut out a picture.
Orrr... I forgot what setting it is, but put the render to it to match the background. (note my sig, does a similar thing.)
And, 'TehRice is King of the World.' ...
Come up with a better quote, I find that just... Stupid... To be quite honest...
However, I think the render is badass, and if you did happen to use a brush you did a very good job in making it all fit together.
But, I have to say, the text is HIDEOUS.
And to be, again, quite honest; nothing in that sig should be animated, just makes it look ugly.
7/10, I think it's very nice, though I'd suggest throwing in a thin black border, and maybe changing the saying to something a bit more clever, or change the text to more of a medieval styled text, or a dark-gloomy text.
Though, I may say this way too often, it's way dull, but fitting to the render.
(If I were you, I'd make the background look more like he's sitting in a very opulent styled manor or castle.)