C&C Original stock is http://img139.imageshack.us/img139/6566/foxrenderkneers1.png primarily working on lighting the render to fit with the background and to create a good blending effect as well as creating shadows on the opposite side of the light source of course.
i like the style you have going it will work out greatly for you in the future to already have a style, thought in my eyes this has way to much lighting on the left side of the render, like always take the time before creating a signature to find every lighting source on a render, than make it work with the signature. Flow: Your flow actually seems okay, depth: i would have to say that you need work with depth, like this signature you just posted, reopen it, get your burn tool, and apply the image on a new layer and burn the sides alot than actually burn the objects and effects that you think should be behind the render, than lighten a tiny bit of the objects infront of your sig and keep the renders color in between these too. I think you got alot of potential and anytime you need help just add my msn and ask bro ill help ya anytime EDIT: also i just noticed your focal, you should google composition and the rule of third its very helpful.
Listen to the post above me, and you'll have it going in no time. I agree, the focal isnt the best yes. But you'll learn. The text draws a bit much of attention. Some spots seem a bit over sharpened.