In that case, I'd recommend reworking, or at least adding an outline to the blue part to make it look like beam of frost. It looks like a pit with a river going through it now. You could try doing an icy projectile (maybe with an arrow-like shape), by using tones of blue and white to color it. Try to do a projectile similar to the icy arrow. If you're intending to stick with the beam style, increase the size, add a main flow (possibly curved), a mild glow around it and icy particles in and around it. Either way, it would require reworking.