General Rules for egg tempera technique (Created by Noel Rockmore in 1960)
1. powdered colors are ground into a paste with addition of water & put in jars. Fill bottle with water on top of paste at bottom.
2. take fresh egg crack & separate yolk put yolk in cup & add tablespoon of water & stir together this is your medium pour into bottle & cap it.
3. tempering color: take out a little color paste & place on slab or cup & add an equal bulk of medium stir mixture with a brush make test stroke if test strokes are dull & chalky add more egg if strokes dry very slowly & are very shiny add more color paste - |Rule|: there should be enough tempering of color to make it a bit shiny when first painted out & dry - || tempered color is stirred with brush each time brush is loaded.
4. when painting tempered color should be thinned out with water keep paint fluid & thin. || wipe off excess paint from brush for matching
5. any color in tempera laid thinly over any lighter color will act as a glaze or transparency(a)
6. Opacity (b) is achieved when any color is repeated over itself
7. Opalescence (c) is achieved by laying any color over a darker color.
8. X block in & build up your general comp. in neutral tone or monochrome (dark) drawing with brush -
9. lay in general mass tones over drawing still mostly intermediate in tone indicate modeling in wash strokes of monochrome drawing paint over this preliminary modeling with tones a bit lighter than modeled mono. areas in drawing which will pull form together & create opalescent tones
10. Reserve matchings of strongest lights & darks to complete forms.
11. in rendering a solid form for example.
a) with brush & monochrome dark paint (or ink) stroke in outlines of general folds & fill in watching of form shadows.
b) Mix 3 color tones 1 almost pure color & touch of white next more white & last quite light with a lot of white
c) Lay in darkest tone over shadow matching areas
d) Lay in middle tone over most of object & then lightest over lapping each tone at junction areas general half tones are in now, but at this stage the lights are not light or brilliant enough & darks not dark enough
e) Model in cross match or small stroke very delicately darkest & lightest finishing touches
In modeling a head or any other object area lay in areas of painting in tones of middle value & model them later with your stroking, real form building lightest & darkest strokes
Also instead of or along with monochrome preliminary basic matching you can lay in shadow deep form areas first with a dark paint, cover this over with a lighter tone & either restore general transparency by laying a darker general tone over light tone which has previously created Opalescence by being layed over dark prelim laying.
Always keep water addition to yolk around same volume of yolk or at most a little more volume of water than volume of yolk
General rule for tempering:
(approx.) equal amounts of color paste & medium:
make mixture rather thick & then dilute to use.
Lean! Dry! Brush for delicate matching.
Thin paint for delicate matching.
Middle tones first
Lightest & darkest last.