Margaret talks about Hero and Heroine character studies
For each book and for each of my main protagonists I do a character study before I start writing. I find this invaluable and below are some of the questions I ask myself:
What does he or she look like? (hair colour and style, eye colour, height, build, etc.)
Star signs? - which can show useful traits.
Where do they live? Town or country?
Do they live in a house or an apartment?
Do they live on their own? If not who with?
Do they have a pet?
What sort of education have they had? Did they go to university?
What do they do for a living?
Do they enjoy their work?
How do they feel about the opposite sex and why?
Have they had former lovers?
Are they single, married, divorced?
Are there children?
Do they have brothers or sisters?
How do they feel about true love? Have they experienced it?