Description for #3 post above. I wanted to create a mystical type atmosphere. Create duplicate layer, twice. Filled first duplicate with sky colour. Used Flood plug in from 'Flaming Pear'. 2nd background copy used flood filter again. Added masks to layers. Erased all but the castle and reflection from top layer. Added layer twice - rendered with PS clouds filter. Changed first cloud layer to screen blend, 2nd to multiply. Adjusted levels etc. for final result.

And every one said, 'If we only live,
We too will go to sea in a Sieve,---
To the hills of the Chankly Bore!'
Far and few, far and few, Are the lands where the Jumblies live;
Their heads are green, and their hands are blue, And they went to sea in a Sieve.

Edward Lear
http://www.nonsenselit.org/Lear/ns/jumblies.html