Can you give me advice on scanning a pencil sketch into Photoshop?
Colourising a scanned pencil sketch to get rid of the black lines can save an artist lots of work and aggravation. Dark, black lines are hard to paint over while maintaining the sketch. There’s an easy way to colour and soften those black lines.
I open a sketch in Photoshop and use the Image> Adjustments> Levels menu commands to maximise the white and minimise the black. I move the white adjustment marker to the left so the lightest grey areas become white. I then move the mid-value adjustment marker to the left so the black lines become light grey.
To add colour to the lines of the sketch I create a new layer and set the blending mode to Color. I fill this layer with an olive green, which will be the eventual colour of the lizard. I use a brush to paint pink over the small flower.
I Merge Down the colour layer and save the image. The sketch has lighter values and the colours are closer to those that will be used in the painting.
I use the Levels tool to get rid of the black lines in the sketch. The sketch should be mid-tone greys and whites.
Here you can see the coloured sketch after merging down the colour layer, indicating the colours of the lizard and flower.