Don't expect to get it perfect the first time. Be prepared to tweak the profile as you go along, to change your results until you're getting good matches from people who fit your requirements. Most importantly, get advice from someone else whose judgement you trust. Ask them what the profile says to them - as opposed to whether it describes you or not. Preferably use someone who doesn't know you so well, as people who know you well will have their judgement influenced by their knowledge of you - they’ll see what they want to see, not what's there. Listen to advice. You don't have to act on it and change anything, just note it for the future, in case you need to alter the profile later.

Your username says a lot about you - "Princess452" or "Shy36" will generate assumptions in people. Either uses a username which is significant and says something about you e.g. "Tigress", or one which is anonymous, such as "Jane2435". Resist temptation to refer to significant numbers such as age, phone numbers, date of birth etc in your username - this gives unnecessary personal information, which you should avoid.

Any headline usually appears in search lists, so it should be positive and catchy - it's one of the main things that will prompt the other party to click your profile and read on.

A profile which is too long will put readers off and they may not bother to finish it. On the other hand, if it’s too short they won't see the full picture, and may not be tempted, so aim for a happy medium