Walker!

That is COOL!!!
You did a really goo job with it!
Everything looks clean and crisp!
Even at this size, you could still greeble it with some extra details. These kind of models are great for learning how to do such (before you decide to take on the larger, more complicated models).
KEEP UP THE GREAT WORK!!!
 
I like that. It is a nice model, and I like the size. :)