Hi Vivien ,so did you complete your piece? Would love to see it.
is that have i finished the sketches of Rosie? no, I never really intended to, they are just what they are, lightning impressions. If I try to 'finish' them they'll lose the spontaneity they now have. I want to do lots more and then i might consider doing a 'finished' piece. possibly in pastel.
I have lots of work in sketchbooks that just stays there and may or may not be developed at some point.
I'm always buzzing with more ideas than i can work on because of time (and energy)
Farmer's point about the mirror is a really good tip - so is turning the work upside down - it helps you to see how the composition is working and if the balance is right.
I think you are reading a slightly different meaning into the word sketch than I am.
When i say sketch i don't mean an underlying working out of where things will go - it is a separate drawing (series of drawings), thinking about the subject, looking at it in different ways, maybe from different angles or in different light, whatever..... The finished piece will develop as something separate in oils, pastels, watercolour etc.
Sometimes i work in the way you describe and sometimes i lightly work out where elements will fit - then put them in - no rules, whatever works at the time. I know at school we were taught not to work outwards like that - but it works
for you, so no problems.