When you want to color the parchment, it is appropriate before you wear it with the fountain or put water until it gets soft and smooth. Then, catch it with tintisors on a scam, stretching it as a drum, and, as I said, give it color in layers. If the parchment, or cotton paper, not be stretched as you want, and put them on a scrap of walnut, or on a smooth and clean stone. Then put a cotton shell, very smooth, over the one you have colored, and with a golden polish, starts and polish with all the power of your hands; And in this way the parchment will come soft and polished. It is true that some more likes to train the colored paper, and that's because the polished stone, walking even on the paper, it gives it a bit of a luster; Fa, however, how do you like, but you know that my first advice is the best. And the sake is this: rubbing with the color polished, to polish, damage the poll with which you will draw, as the temptation you will give, for there will not appear the shades and the luminous tones, which will not happen. You follow my first advice. Sit Nihil Bominibus, how do you want.
How should you colorers the blacks in black. Or in purple? And now, get ready to do these colors. To color your heads in black, or in purple, take - for the number of sheets of paper, which we talked, half a half ounce of lead, and as a Bob of Lapis Amatitis, and rub them well Together, how much you can, because the more you rub them, the color does not hurt, but it is always improving. Then mix with glue, in the face shown before. How should I color the indigo color? Indigo color.
Take the same number of sheets of paper as above, a half ounce of white lead, and a two beans of Indaco Maccabeo, and rub them well together, for rubbing them well, the color does not hurt. Mix, then, with the same glue, in the way shown above. How should you color the reds in the red color, or close to the peach color? If you want to color red color - the number of sheets of paper, as above -, take half an ounce of earth-green, two lead white grains, and a chiara synopy. Freak them in the chip know, and mix everything with glue or tempera. How should you color carrier in the color of the carnatia, that is, red-lit? To make the color of a red-lit, like carnatia, you have to here - for the same number of sheets of paper - a half of a leading white of lead, and less of a grain of cinnabar.
You have to rub them together and mix them with tempera, in the face shown before. How should you color the grains in a gray color, or plumbur? The gray color, or plumbur, you will do it this way. First take a quarter of a leading white of lead, then a bob of open ocher, and less than half a grain of black. Freak them well together, as I've shown. Put glue, as I said to the others, and always adds everybody at least a burned bone powder. You have learned here to know how to color herbs in all colors.
How can you copy the parts of a beautiful figure, or a drawing on the paper. You need to know that there is a paper that calls the paper, and which can be of great use to copy a head, or a figure, or half a figure, as they are out of the hand of the craftsmen. And in order to be able to pull out the contours well - either from the paper or on the scan or the wall -, redressing the original features, ashas this paper. On the figure or drawing, and sticks a binisor at the four corners with a little red or green wax. Understanding, through the paper, the figure will appear, or drawing, underneath, so you can see them. Then, take a sharp, or a ward of the squirrel, and soaking it in the ink, you can start following the contours of the drawing underneath; Also, by calculating, some shadows appear, which you can see and copy. Lifting then the paper, you can add some white and highlights, as you like more.
* Note: Cennino Cennini -Painting Treaty, Meridian Publishing House, 1977