Very good job- the look in his eyes really shows how much of an analytical mind he has, and a spirit as well- comes across very well. The shadowing is fairly good, as is the folds of the clothes. I agree with Jazza and Revolutsia that there needs to be some improvement. I'd say add a bit more shadowing on the right forearm on the underside, and under the same side leg. The grass and bushes nee to be a bit more defined (i.e, more individual leaves/blades), and the grass perhaps a bit greener in its color. Still, you've done an excellent job, here!