Games 2D plarform with hand drawn graphics

Hi everybody
I'm making a 2d platformer game with a hand drawn graphics. When
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I want the graphics looks like renaissance engraving with just black and white. But there will be bursts of color sometimes. I'm planning a lot of tiny details which could be a kind of fun and strange but will play their part in game story.
Here are couple of screenshots and little gamplay videos. Feel free to comment I'll be glad to know any opinion, critics and advices