With my first oil painting and also many digital paintings, I do the following, not a conscious decision, I just became aware that it's what I'm doing: My first pass of an object or face is to block in main values and colors, getting as near to accurate as I can. I then blend this out. A lot. The next pass is restating the values and edges that were blended out in the first pass. Again, I try to be accurate. Some blending on this second pass, but not as much as first. Third pass is for fine details and highlights mostly.
Does anyone else have a similar approach? What disadvantages would there be to this? Is this dissimilar to Mark's method, or just a different take on it?
Is this approach going to hinder my development of a "painterly" look since I'm working it so much? Will "one pass" Alla prima painting just happen as my skills develop?