Congratulations! That's great news!
I like your first two tag lines the best.
Here's my two cents:
I don't think it will be necessary to display your web site: like you said, that's advertising, and would seem to conflict with the nature of the portrait. In this age of internet, your name should be sufficient for anyone to find you, assuming that your website uses keywords that include the name of your sitter and anything else you think will be used as a search word, such as "portrait" and "artist".
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