Its just like other paintings. jus like water colour paintings.
In handmade paper, preferably light shade colours trace the design using yellow carbon. Paint using coffee decotion, certain areas can be left without painting, if u want darker shade paint the area once again. If u want to do the outline with coffee, keep the decotion overnight, it will become a bit dry so it will be easy.
U can add the 3 D glitters to add effect in case of egyptian paintings