thanks for checking out the work. In response to your question about the drawing - the initial proportions and gesture were drawn with the natural red chalk and most of the tonal work was done with the water colour pencil.
the painting was painted with lead white (it is very warm and a perfect semi-opaque paint for flesh painting)
to get the warm atmosphere - use warm light mass (raw umber)
cool turnings (ivory black)
warm reflected light (raw umber)
neutral background and hair (raw umber, Ivory)
finish the painting alla prima then...once dry
glaze with bitumin(ashphaltum) keep it very
subtle maybe even just the shadow mass.
then scumble with white (sparingly) only to
accentuate the light effect.
Never scumble the reflected light- paint in the
correct value opaquely
raw umber -old holland bitumin-rembrandt
Scumble with zinc - very subtle
write me back if this is confusing.