You sure picked the wrong places to play as a kid! You look like you're about to get grinded to a pulp beneath its's wheels! Anyways, excellent shading and tones on the tractor. The boys hair is rendered well, and the boy overall is good. Though you might want to study a little more human anatomy to make you future drawings even better. (I know that people are probably the hardest thing to draw, so, it's ok, you have an excuse - lol. I myself am still working on my people drawing skills.) Overall an excellent drawing. Keep up the good work!
I remember when I was that age and believe me, when we would go visit my Grand Father in Idaho, I was so thrilled and amazed with a whole new experience, I KNOW I did the very same thing. Dangerous or not, thanks for the very fond memories. I like it a lot.
It goes on my laptop for the coming week and gets high marks from me.
There are only two ways to live your life. One is as though nothing is a miracle. The other is as though everything is a miracle.
Albert Einstein