A genuine smile makes you look friendly, fun to be around, and appealing. If you want to dial it up a notch, some experts recommend a flirty or sexy smile, though this really depends if you are a flirty person in real life!
Choosing great profile pictures is more about looking interesting and lively than looking like a model, so avoid Photoshop and very posed pictures, and instead pick some shots you are happy with how you look in but which feel natural and reflective of how you really are!
Now you know that your profile picture is your lucky ticket to meet compatible singes to make friends and ideally find your perfect match. Make sure you choose the best one!