how to i turn my drawings into images like this on adobe..?

[Kitley S]

i wanna change my pencil drawings into images like this but i can't find any tutorials ANYWHERE.

does anyone know how to make these?

http://csjwcr.deviantart.com/art/The-Ultimate-Cute-Shirt-77322785

http://i96.photobucket.com/albums/l161/2k0/er.gif

http://i96.photobucket.com/albums/l161/2k0/BREAKFAST_by_DjBisparulz.jpg

please please help me!
as i eventually want to put my designs on t-shirts.

thank-you!