Sometimes I like to play around with the posterize filter after I upload my watercolor illustrations to photoshop, but I was playing around with adjustment layers recently( which i'm horrible with) and ever since, my posterize effect has been weird! usually when I posterize my images, it thickens the edges and flattens the details, looks pretty sleek but now when I posterize, the edges remain thin and the image becomes splotchy..I'm not sure what caused this change...the mode is in RGB color and...