Possible Early Velasquez Painting Methods -188

Conversation commencing on the early practices of Velasquez. Grisaille underpainting and/or other preparations. Copying from the masters in general. Also Boston School practices, and those of Gerome, Ingres and Carolus-Duran.

QUESTION:I am going to copy Velazquez Old Woman Frying Eggs and interested about his early painting method, how he started the preparation of the canvas. I think he used some reddish earth colors ( burnt umbra, sienna ) for the base, because if you look up close the painting there are a lot of reddish color break through on the surface witch i think its the base layer. After he roughly but carefully sketched the basic shapes with some dark colors, but after that i dont know how he continued. Can you talk about the whole painting method?

Andrea