On the first one: It's great. =D If you cleaned the scan up more, it would be better tho. OUt of the two, I like this one best. =D It looks soft and I would love to use it for an icon if the line art was cleaner.
On the second one: Naruto seems a bit too tan in the face, or maybe that's just me. D:
But seriously, you're great for your first time. <3 I know you'll keep improving after practice, so I can't wait too see your colorish in the future, especially when its great already. X3