Chapter 3. Drawing and Illustration

3.1 Line art
3.29 Final state of the tutorial (XCF)
3.43 Creating a large cube
3.44 A wall of bricks
3.45 Pyramids
3.46 A cylinder
3.47 A house
3.48 A tower
3.51 Painting outlines
3.52 Painting sketch lines
3.53 Filling outlines
3.54 Filling a sketch
3.56 Adding light with the Airbrush tool
3.57 Adding shadow with the Airbrush tool
3.60 Traditional European calligraphy
3.61 Japanese katakana
3.63 Filling with a solid color
3.64 Filling with a pattern
3.65 Using a gradient in a button
3.67 A dramatic storm sky (XCF)
3.68 Mushroom A
3.69 Mushroom B
3.70 Mushroom C
3.71 All mushrooms faded into one composition (XCF)
3.73 Using a pattern
3.74 Initial sphere
3.78 Final state of the sphere
3.79 A red rose in Karine's garden
3.81 An example of different range values (XCF)
3.82 Successive steps of smudging
3.83 A slashy monster
3.84 A flashy monster with fur
3.85 Smudging the peach
3.86 Smudging the pear
3.125 Complete painting (XCF)


  1. I had some problems getting the transparency of layers to work as described on page 62, until I found out (after several retries) that I ignored the last words on page 62 "first create a new layer at the bottom of the layer stack ...".
    After succeeding, I was wondering "why" this bottom layer is necessary, I found a little glitch in your description "The layer will be background and can be any color that you like."
    This is not quite correct and should be "any color except transparency".
    If the bottom layer has fill type "transparency" (which can happen easily by accepting the defaults from the previous new layer operation), the result will be the same as with now new bottom layer: Instead of seeing the original drawing at the top layer, you see all black.
    Again, I was wondering why this happens and came to the conclusion this is caused by the multiply mode of the top layer: Multiplying 0 (the two upper layers' background color) with the color of the top layer always results in 0 = no color = black.
    Is my conclusion correct??

    1. Transparency is not a color in itself, and Figure 3.5 clearly shows that the bottom layer is white and opaque. But you're right, the explanation could be clearer.