recreating the photoshop burn tool in ae?

[Terry Coolidge]

Every layer in AE has a “Blend Mode” setting that is set to “Normal” by default. Simply change the blend mode on a layer to one of the “burn” options. If you’re trying to specifically recreate the Burn tool from Photoshop, then you probably want to create some sort of grayscale (black and white) animation going on within the layer that you set to “burn.” Maybe try a white solid layer and use the “write-on” or “stroke” effect to create black brush strokes that then affect the underlying layer(s).