Chatterrific and Gerald So's Desk use the same font and line spacing for the profile as for the blog entries, so I followed Peter Chen's instructions.
To customize my profile on If You Want to Know About My Life..., I created an HTML widget that calls on style declarations used by the default Profile widget to display my name and location (
profile-data), author photo (
profile-img), and information (
Alternatively, you can go into your template, following Vin's instructions, and type your own information where Blogger calls for your default
data:aboutme/but that requires you to save changes to your template whenever you want to change your information.