Every year my BFF and I make the costumes for our annual "Childrens Day" event. This year the performance was Hercules. (Of course...Disney). I made the Ice costumes. The body is just a white long sleeved t-shirt. I sewed long strips of tulle of different shades and textures along the top of the shoulders. The masks: I took white simple masks from the craft store and "made" icicles with hot glue. Painting some with silver spray paint and others with blue glittery glue. Made some snow flakes with got glue. and took a clear plastic water bottle, cut thin strips. Heated them over a small flame and wound them to look like an icicle. Then glued them all on to the masks.
I also made the "stone" masks. Black foam glued around a mask in blocks. I made a hole in two and added lights to look like eyes. When they were on stage I was very happy with the results of the "eyes" because there was a "smoke" haze and the eyes really glowed.
Some of the materials for the stone mask:
If I ever find the pictures of them on stage I'll try to post.
Thank you for looking.