Out of the three I like the ice flowers the most as well. Though it's a pity they're fake.
The reason that it's the best one, I believe, is because it is a cleaner shot with more contrast. Meaning the yellow and white.
The last on the other hand, is very interesting. I don't think I've ever seen a branch covered in that much ice. So it's a rare sight for me. And showing rare things or unusual perspetives is a great thing for photographs.
If these photos are meant to be artistic and not for the family book, I suggest focusing more on composition. So, finding good places to take pictures of the thing you want to photograph instead of just looking at it and clicking away. Because the way these things are photographed is a bit dull, as I think you'll agree.
So keep practicing and if you find critisism usefull, PM me.