Fig. 29.
It takes a very skilful workman indeed to put the strokes so evenly side by side that the result looks flat and not stripy; indeed you can hardly hope to do so, but you can get rid of what "stripes" there are by taking your badger and "stabbing"
the surface of the painting with it very rapidly, moving it from side to side so as never to stab twice in the same spot; this by degrees makes the colour even, by taking a little off the dark part and putting it on the light; but the result will look mottled, not flat and smooth. Sometimes this may be agreeable, it depends on what you are painting; but if you wish it to be smooth, just give a last stroke or two over the whole glass sideways, that is to say, holding the badger so that it stands quite perpendicular to the glass, move it, always still perpendicular, across the whole surface. You must not sway it from side to side, or kick it up at the end of each stroke like a man white-washing; it must move along so that the points of the hairs are all just lightly touching the glass all the time.
Fig. 30.
How to Ensure the Drawing of a Face being kept Correct while Painting.—If you
adopt the plan of doing the first painting over an unfired outline, you must be very careful that the outline is not brushed out of drawing in the process. If you have sufficient skill it need not be so, for it is quite possible—if all the conditions as to adhesiveness are right—and if you are light-handed enough—to so lay and badger the "matt" that the outline beneath shall only be gently softened, and not blurred or moved from its place. But in any case the best plan is at the same time that you trace the outline of a head on to the glass to trace it also with equal care on to a piece of tracing paper, and arrange three or four well-marked points, such as the corner of the mouth, the pupil of the eye, and some point on the back of the head or neck, so that these cannot possibly shift, and that you may be able at any time to get the tracing back into its proper place, both on the cartoon and on the piece of glass on which you are to paint the head. On which piece of glass
also your first care should be that these three or four points should be clearly marked and unmovable; then during the whole progress of the painting you will always be able to verify the correctness of the drawing by placing your piece of tracing paper over the glass, and so seeing that nothing has shifted its place.
