Drawing with alpha color you can do this

If you want to get the form of something you'd like to draw. You can do that with Shadowforge. First, you open up a picture. Then you put the alpha value really low, like 0.03. Then you draw any color over it, and if you want it to be like the picture below, then pick Blend Sprite to Sprite after drawing with any color, and it'll have this gray color to it.

I missed drawing the entirety of it, but it should look like this.



And here is the real picture (which was shaded with the Shadowforge gameboy shader).