Painting the next layer before the first is dry
“My second layer tore up the colour underneath and left strange water marks.”
What is happening
Fresh paint introduced onto a damp wash dissolves the settling pigment and pushes it aside. This leaves pale patches surrounded by dark, ragged cauliflowers and unintended hard rings.
Watercolour requires the paper to be either fully wet for wet-into-wet blending, or bone dry for glazing. When a wash is in the damp, cool stage, adding wet paint re-wakes the binder and creates capillary movement away from the brush tip.
The 30-second test
Touch the back of your hand gently against the paper; if it feels cool to the touch, it is still evaporating and not dry.
How to fix it
- Stop painting immediately and do not touch the bloom while it is wet.
- Allow the entire sheet to dry completely until the paper is warm to the touch.
- Gently re-wet the back of the bloom with a damp, flat brush to soften the hard ring.
- Glaze a slightly deeper, unified tone over the whole area to knit the value together.
Can it be saved? Partly
You can soften the ring edges with a damp brush once dry, but heavy blooms usually need to be integrated into a darker background value.
Drill: Timing the Glaze
About 15 minutes. You need:
- scrap watercolour paper
- round brush
- single dark pigment
- water
Lay four identical wet squares of colour. Paint a stroke across the first after two minutes, the second after five, the third after ten, and the fourth when fully bone dry. Note which stage produces cauliflowers and which gives clean edges.
Background reading
General teaching sites on this subject. They are a reading list, not page-level citations for this advice.
The advice is a generated synthesis of common teaching practice and has not been checked line by line against any source; treat times and difficulty as estimates.