This was kind of a test start, I think going to a grayscale coloring style would probably be easier. If not white and black then something purple and white some people do white and a tanned color I think. I'm not sure.

In a small town, a cursed forest is located. Children and Teens are taught that if they misbehave, they would be sent into the forest. The forest however is alive, the trees block the path when anyone enters. They are never seen or heard from again. A young teenager and her younger sister live in a small house. Their family constantly ignoring the younger sister. Leaving her starving on most days to save food. The older sister grows tired of this. She decides that they have to escape into the forest. Slowly as they wander deeper into the forest, they realize what creatures exist there. Followed Relentlessly, by the Whisperer.