How to Draw a Cat (1930)
dessinoprimaire.blogspot.com
dessinoprimaire.blogspot.com
http://www.jaruzel.com/files/Jar-Cat.png
(Everything I draw comes out on a slant, dunno why...)
The slant thing is something that'll correct itself as you practice more. I think it comes from writing - a lot of folks learned to write cursive at a slant (unscientific theory). If you want to speed it along, lightly draw grid lines or try altering the angle of the paper.
Keeping your elbow under your wrist helps.