I love the iceskating shot. It's beautiful. Even with the blurred skaters. To deal with this, i would personally attempt to lower the ISO to 100 and take a longer exposure to make every skater consistently blurred. This longer exposure might also allow the buildings to have more defined edges from the sky.
The creek shot is excellent except for the following.
1) The tilt doesn't work. It's a little too much.
2) The exposure is a little much. I am a fan of overexposures, because I'm very artistic in my perception of things - so overexposures to me are great, but this one is a little much because of the snow.
3) While I love the crop on your first shot (a very wide angle aspect ratio), I think a wide angle aspect ratio would also look great on your creek shot. Doing so, you could eliminate some of the overexposure of open space and focus on the waterfall, pond rather than the sky, waterfall aspect..
just my .02