Fresco. The Dionysius. Frescos copy "Annunciation" (Detal: The Virgin)

I am follow by old frescoes technology. I`m use real slaked lime and I`m use for painting naturals pigments. I was painted until slaked lime was damp. I`m try find exactly ( the right) pigments, which was used Dionysius himself. This is genuine fresco. I`m try follow the technology by 15 centory. This is detal by Dionysius fresco copy-The Virgin, from Annunciation.