YelpPuppy - that's a beautiful photo but I see what you mean. All of my cloud shots are 'anchored' by some landscape interest below it. I've seen great cloud photos though - and a common thing I notice is that you feel like you are 'parallel' to them and not just looking up. You did capture that aspect well. . .but it's lacking depth maybe?
It's possible that the clouds that photograph best are the ones that are really poofy and have lots of texture.
I'm not help on the cloud photos :)
FMIL - The first one - fun idea, I see what you were trying to do! Don't know how to fix it though :)
The second one. . . .I know that the shutter speed was slow to capture the low light and you got camera shake. Tripod maybe?
More pro gals (Yelp, Brianne, Miller) would know how to capture that without a tripod. I don't :)
Gonna go dig up one my my technical disasters. . . .