se.</p>
<p>The approach I am most familiar with is called <i>alla prima </i>painting, 
which basically means completing a painting in one session. With oil paint, that 
means the paint is always wet, so if you ever need to put one color over another 
- and I do this all the time - you are working wet into wet. The challenge here 
is avoid having the layer underneath muddy up the layer on top. One way to do 
this is to apply the first layers sparingly - either using a mostly dry brush 
with little pai