Good question (though it would be great if you could first do a bit of bedwork and offer some examples of where you may have come close, and where you were ripped off and felt desperately disappointed, etc so we know what you like)
Anyway, it's a subject close to my heart, and so far I can only really offer the following
https://www.ukpunting.com/index.php?topic=44241.msg584114#msg584114Positives: Great body, good attitude, enthusiastic kissing, good VFM.
Negatives: Only works Monday and Tuesday, No OWO, Pockmarked face (but still sexy IMO), her sex talk can be a bit corny