Well for starters.... don't use bases. They don't really contribute to your ability to draw new characters and limit you to what others have already made.
Play around with making your own cartoony lil characters and scale up as you progress!
Try starting with something around 32 pixels wide and tall, think in chunks of color for now rather than focusing too much on anatomical stuff. Simple is a good start!
(plus, that base is awful.)
(like really, yowza)