First of all, i love the contrast between the background and the character. And the artstyle of those trees is just so pretty!
Looked at the sketch too. And this is such an improvement on that. I read your description that came with the sketch and you say that it's hard to exactly write down an explanation of your thoughts that made you draw this. So i'll tell you what it made me think about.
Being Dutch, i've been told many stories about the second world war. The stories mainly involved Dutch people and how they tried to resist to their country being taken over. Giving shelter to people while risking their own lives and that of their families. Sabotaging the enemy as much as they could.
I think that, if you'd ask me to summarize this drawing in one word it would be: ''Resistance''
Anyway.. great drawing. The guy that hung himself and the impaling on the hills really give it a sense of urgency.
Keep it up! :)