I assume you don't have a scanner. Don't worry too much about it. Here is a good tutorial on Deviantart about getting your images into a computer with a digital camera:
Clicky
Anyway, onto your art itself. The thing many people here have mentioned is cropping. Please crop your pictures to get rid of the white space around them. Simply put, get rid of everything from the pictures except the picture itself.
The first one is decent. I like the way the hair and eyes have a similar colour. They match very well. Also, you convey his expression very well.
But what is that red stuff on his nose? Is it sunscreen? Its hard to tell, so you should make it easier to tell what it is. Also, he looks a bit flat. You're using pencils, so adding volume should be rather easy.
The second image is very similar, in a very similar pose. I think the colours look good in this one as well, and he has more volume than your first picture. I like that. I also like his teary-eyes. Very nicely done.
But his arms seem a bit thin and his hands look like stumps. His sleeves look a bit odd, and the logo on his shirt is off-center.
I hope I helped you improve your art.