Your poem seems to divide into two, perhaps three parts. In the first part you use wintery imagery to suggest that though outwardly you seem dark and frozen, beneath the ice there is a lot of activity. Perhaps (since the poem does seem to be personal), this is you when someone first gets to know you - reserved, a bit stiff, maybe even a little frosty. But you helpfully remind us that there is more to you than it may at first appear.

Then you describe the stream defrosted and unbound, bursting with energy and creativity. So much creativity - and new ideas that it is perhaps a little scary. You finish by warning that there may not be a safe limit, once knowing you one is along for the ride. Which is just as it should be.

I really enjoyed reading this. Especially I like the way your descriptions conjure up the stream (in both it's states), and almost playfully tell us that you are worth getting to know - even though it may take a while for you to show your full creative personality.