I was going to say that they were all very underexposed, but my monitor was just very dimmed haha.
Overall, not too bad, but here some minor critiques. Also, where are these taken?
1. Not so sure it needs to be a pano shot. the subject seems to be the house and/or boats, so i would suggest keeping the photo more based around them. the rest of the shoreline seems empty. the majority of the cool cloud formation also lies right above the house/boats, so i would stick to that area. also, it would be nice to have more water. not too much, but just to give the shore a little more "breathing room"
2. composition wise, i love it. there is just something about it that doesn't do it for me. i cant tell why. you have leading lines (the dock/road where the boat is and shadow on the mountain all point to the same place) and you do a lot of good things. maybe it would work better for me if you darken up the shadows in the mountains and the sky a little more. they seem overexposed. thats really the only thing that i cant think of now. good shot though.
3. really sick. i like the shot a ton. the sailboat and land on the right balance eachother out very well. the only think i don't like is that the horizon is about 50/50 up the frame. honestly though, it works for me so i don't think i would change it too much. if i were to, i would crop a tad off the bottom, but its really nice as is. the colors are pretty great too.
good work. the stuff that you post seems to be better and better each time i see it.