collar... I solved this by making it slightly wider. I finished the armholes and neckline with bias binding, folded to the inside and sewn in with invisible stitches. The skirt is actually too short for hemming (fabric was about a yard/meter), I am thinking about adding a band of black fabric with a different texture. Not sure yet. I HAVE to go to a fabric store soonish.
This was only my muslin, now thinking of making a lace one, in taupe or teal.... :)