Instead of trimming it, pull down the black belt over the skirt. That lengthens the upper torso so it doesn't look as awkward. Also, you can pinch the skirt in the back to tighten it up front. Then using fabric glue, seal the pinch together (from beneath the skirt) and hold it for a minute. The glue dries and the skirt will look much better without a need for cutting or trimming.

Wow... those look amazing! Great attention to the detail and use of super articulation. Would love to have these in my collection. Any tips or hints on sculpting with wax. Seems like you picked it up really quickly and are producing some quality work.