Commas seem to be where writers get the most confused. Often writers use them as though they are a breath in a spoken sentence. Knowing when to take a comma out can make a sentence punchier and keep the flow of the scene tighter.
The cat ran outside, and into the shed, to escape the dog, who badly wanted to eat him.
Lots of commas. Try this:
The cat ran outside and into the shed to escape the dog, who badly wanted to eat him.