Well Ujjwal - since you asked - here's my take on your set above...
1 - a little dark, and the Horizon divides the frame in the middle (albeit up and down on the ridge) - I assume this was to get the cloud formation into frame... For me it's a classic case of a good basis for a shot, on another day, with better weather, and a little more attention to framing.
Yes, I was trying to get the cloud formation. This one is scanned from a slide; and the slide shows a lot of the foreground ok. I think i should have done a bit of the ruler of 3rd composition on this.
2 - Doesn't do much for me to be honest - just a few christmas trees in front of a hill. If it's a shot of the trees, it needs to show more trees, if it's the hill - loose the trees - or make a feature of one of 'em.
Agreed Mark. Its didn't work
3 - Pity about the flat sky and it's a real shame you cut the bottom off of the boat. Just a little more breathing room in the framing would have helped. If you're shooting with a camera that has a 100% view viewfinder, give it a little extra space around the frame. I know it's nice to get it spot on in the camera, but just a little lattitude to straighten framing and crop accordingly is still a reasonably purist film approach honest!
The bottom is there in the slide; but the framing is too tight. It was taken from behind a glass window on a boat, and that didn't help. There was some nice story about the house though, the boatman was telling us, I forget. 
4 - Again, for me it needs a little more "breathing space" around the edge of the building. Either that or fill the frame completely with details of the building.
5 - A little looser framing of the waterfall would again help here - I'd have liked to see a sharp scan of the shot - just to compare the static ground and the moving water - but with the slightly blurry scan, it's hard to pick up which blur is which.
6 - I can't work out where I'm supposed to be looking in this shot - are you trying to make me look at the upper tier of the building, the lower one, or the lake behind. I'm not sure what could be done to draw the attention to the part you want me to be interested in, but it needs something.
I loved this 14th century ruin, sitting by the side of a Loch. The idea was to give a sense of the setting; obviously I have failed. Maybe, I should have taken the shot from the lower story; and kept just the wall .
7 - Me Like ! good strong line leading through the shot, I think there's a good image hiding behind that sub-standard scan
Overall - as Mike said - you need to get your scanning sorted out a bit better than these. Also, I'm aware you've said before, you shoot handheld - and I'm going to repeat my advice yet again -
if you're shooting landscape-ey stuff - USE A TRIPOD - not necessarily because it's going to stop wobbly shots, but because it'll give you more time to tweak, tweak and tweak your framing. Then sit down and wait for the light before hitting the shutter!
I am sure you dont intend to put me up in your barn, but I try that, and divorce is a guaranteed outcome 