ahsoka

I really think you just need to build on what you did with the first one.  Expressive poses and expressions shot from interesting angles.  I don't think a set needs a gimmick, in fact "themes" are usually not worth as much as people think, but sets do need to know what sense they want to express.  You don't necessarily need to know what that is beforehand if you can find it as you shoot, but you need to find it at some point, and it's always better if that comes from the model, and if the photographer understands it and wants to express the same thing.

Your first set has a casual, sensuous elegance.  Your face showed expectation and hope, but not enthusiasm, retaining a measure of reserve.  It wasn't really naturalistic, you presented yourself for the camera; but there was a languid confidence in your gestures.  It was definitely a slow sexy, not a charged, intense one.  The camera moved freely all around you, not bound to a particular perspective.  So you could lean farther into that mood, a modern romantic feel, or you could try to pull off a different energy altogether; a racy zingy set, or something sharp and confrontational, go abstract, or just have wacky fun.  The point is to have a perspective.  You're beautiful and expressive enough that if you have a good photog on your side, everything else will sort itself out.  You'll fall into the right expressions, strike the right poses to get that perspective across.