ice is extremely hard to paint.
try to focus on the 2 main characteristics: it's cold and hard
this leads to strong blue colors (which you captured) and clear cut planes (if you want to go more for the crystal-impression than for the molten icicle impression) - yours seems to go more in the crystal direction
This means you work with strong straight lines sharp angles. try to emphasize the length with vertical lines, rather than with small cracked planes.
What makes ice so difficult are the reflective and transparent qualities - to capture those believable you need a lot of practice.
I added them to my edit, but try to focus on the more simple things before.