This painting was a work in progress for two months, as each stage had to dry before I could start the next. It will take another two months for it to be dry enough to varnish.
I work on several paintings at a time. Moving from one to the other, waiting for them to dry between stages.
I should also mention that I make a few sketches before any painting, to decide which composition I like best.
I hope this has given you an idea of the process involved in completing your commissioned portrait!