Ed Emberley made a bunch of books that helped me learn how to draw when I was a wee girl. He's actually been a huge influence on many artists of my generation. Above is my version of a Zortian from the planet Zort. Ed's original is in the bottom right. You can learn to draw your own Zortian from the Big Green Drawing Book.
In fact, I know a little Oliver who drew a whole bunch of creatures from the planet Zort in the great year of 1979.