Rachel,
I'm in total empathy with the concept of what I think is something biological, possible a twig encased in ice. This is a subject that truly I find fascinating and actually I look to photograph myself when I can.
Here, however, the idea is not, IMHO, translated into the physical form that gives sufficient merit to the concept.
There is no focus on the ice and the highlights are blown and again have CA. Stopping down might be helpful so that the outside of the lens is not needed. I'd do this with flash and 1/250 second and a small aperture to increase depth of field.
Also the composition does not get my juices flowing. Draw a line following where your eye might go to place of interest. Nothing compelling. If not the subject, then at least the pattern and placement of shapes, colors, or textures might seduce the eye. There is little focus and little to focus on. The most interesting part is the background.
I again offer this harsh critique as my humble single opinion. It's just my reaction and judgment.
Perhaps if there was a background for this or at least a title it might mean something to me and create some sequence of feelings and interest. When shooting such a natural phenomenon one has to study the ice and search for and experiment with many different angles. Try, for example including another object in the background with which this frozen form might complete a picture. Literally go around it crouching and going from side to side and then to the back of it or above to find a pattern, a composition that declares "I'm whole". That is your picture! Yes it hard. But if it were so easy, you would have nothing special to accomplish!
Otherwise I'm lost.
Kind wishes,
Asher