First of all, you will have to decide who is who in this band.
STEP 1
You will need to create a NAME for your band and each of you will impersonate one member and decide the role in the band (guitarrist, drummer, singer...).
STEP 2
Plan the text for your profile:
* First paragraph: Name, age and role in the band; likes and dislikes
* Second paragraph: description (character and appearance)
* Third paragraph: short biography
You can invent everything, you don't have to describe yourself.
STEP 3
Write and check
Useful resources