Swing plane for less than full wedge shots

[socky]

I've been working hard to improve my full swing plane but my question is about swing plane/path in the short game.

When I'm hitting pitches, half wedge shots and the like, I cut across the ball.

I think this happens because I'm not using my lower body at all but I'm not sure if thats correct. I certainly dont feel like I attack the ball from the inside.

I guess I'm after some advice about how you should be hitting these deft little shots.