The rain came before the straw was gathered, the green growth is now showing through.
Painting fine lines ‘wet on wet’ is always going to be problematic. The physical application of paint is the least of your worries. As in other techniques, like pen & ink, there is absolutely no room for error in the ‘drawing’ of the fine lines. Mistakes cannot be repaired. The only recourse is to ‘disguise’ the mistakes. This type of drawing takes a long time to learn. In traditional oil painting, where the under layer is allowed to dry, the process is a lot easier. Any mistake can be wiped off with solvent and the line reapplied.
As for the application of paint ‘wet on wet’ – the brush applying the paint can pick up the under-colour instead of putting it down. I have a very simple rule which applies to all situations and it is this: the paint on the brush must be more ‘liquid’ than the paint in the under-layer. This means, in most cases, the paint being applied has the consistency of ink, very different from the usual oil paint consistency. This is achieved by mixing the paint thoroughly with solvent, not medium, which tends to be of high viscosity (oily). I find using solvent firstly in the under-layer and allowing it to evaporate and/or using Alkyd fast drying oil paint does make it easier. This is why I use so much solvent.
For thicker lines on wet under-paint, I scrape a ‘channel’ in the paint with a palette knife and paint into this with the liquid paint as you will see in this painting video.
Here’s the process. See you soon.