Day 1:  Base... pink stuff.
 

Day 2: Ok, well, I didn't take any pictures of this stage, for some reason. Basically, I coated the whole darned thing with FoamCoat. Let it Dry....   Coated thinner areas and the ice "cracks" with  watered down PVA glue and then hit a couple areas with some spackle.

The riverbed was covered with a smooth coat of spackle... Why? Well, because I sprayed the hardboard wit the blue paint, and it looked like crap. When I hit some of the spackled areas with the blue, though, it looked exactly like I wanted the river to look... deep blue with tints of green.

So a lot more time was spent waiting for things to dry.

Day 3: I spayed everything with a heavy coat of blue (it took 4 cans of blue spray!) certain areas were apparently missed with the FoamCoat and the PVA...  these areas, as you can imagine, melted! However, it turned out to be a fortuitous occurrence, since it actually looks more realistic with the "ice" cracking and sagging in places.

While the Blue was still damp, I hit it with a coat of white. This let some of the blue "bleed" through and give it the "depth" that real ice has. (You'll notice that really large chunks of ice are rarely pure white.)

The bunkers were made form a large cranberry juice bottle that I cut in half, sprayed grey, black and grey again. Snow was added on top to hide some of the "juice bottle" looks and also to tie it into the terrain. These were secured using a HUGE quantity of liquid nails. (They are never going to be dislodged!)

Now, the board looked good, but it needed something else. I used some scenic cement and in a couple of places around the board, I layered in some sand. I paid particular attention to the bases of cliffs" and around the ice-chunks. The sand was then sprayed blue and white, again.

Finally, I used some "snow" from Woodland Scenics. Another coat of scenic cement and scattered areas of "blown snow" were created!

Lastly, I used some of the "melting beads" from Woodland Scenics to create the water in the river. After melting (and before pouring), I added some blue ink to give it a little colour and depth. Also, as you can see, at the last minute, I decided to add some icebergs to the river. (BTW: After using it, I was not hugely impressed with the beads, Maybe if I had a large enough pan to melt it all at once, it would have been different, but pouring in different  sections didn't work as well as I had hoped, and the heat gun didn't fix things as well as the instructions claim it will. (Oh yeah, and the heat gun will met the polystyrene as well, so BE CAREFUL!))

So, below are the final pictures.

Total work time: 8.5 to 9.5 hours
(with a huge amount of additional time spent waiting for things to dry.)