The horizons on both of these feel tilted(*), but the foreground-to-background flow is really good in both of them. The clouds (with reflections) in the first shot lead my eyes right out to the horizon. If there were something out there at that point of convergence, it would be even better. Great DOF on this one -- it's sharp throughout, which is important in a shot like this.
In the second shot, I love the curve of the shoreline -- I'd even consider more curve & less sky, since you're picking up some sky in the water anyway, and possibly a GND filter to pop the bottom of the photo a bit. I don't know if this has any appeal to you or not, but I've tried cutting a couple of my recent portrait-orientation landscapes (?) into extra-tall skyscraper crops and tossing them on Pinterest, which seems to favor that format.
Both of these are really nice winter scenes -- great job.
* -- re: tilted horizons - I know at least some of what I'm seeing is an optical illusion caused by the curves of shorelines, but I still think there's a bit of a tilt there, and in this case, I'm going to claim that perception == reality. ;-)