Oil pastel scratching Step 1: Get a smooth piece of paper. Colour the whole page in a light coloured oil pastel. Step 2: Then colour on top with a dark coloured oil pastel, such as black or dark blue. Step 3: Cover the whole page in black. Step 4: Using a nail or palette knife, draw the picture onto the paper by scraping off the oil pastel Madeline AltermanMay 28, 2020Comment Facebook0 Twitter LinkedIn0 Reddit Tumblr Pinterest0 0 Likes