Create a realistic wall impression painting

  1. Open a background image in Gimp.
  2. Now open the foreground image in another layer in the same window. Try Drag-Drop.
  3. Go to "Mode" in Layer window and select "Burn" mode.
  4. Open Colors>>Colorize and set values Hue:0 Saturation:0 and Lightness: 30.
  5. Repeat 1 to 4 for the Background image