After getting the track marked out on the board I painted the surface with a brown paint to give the base a neutral colour. Now to get the first sections of track down. After some trials I found it easier to solder the droppers onto the track and then paint them before laying them permenantly, I pre-curved some of the flexitrack first as once they get paint dried on them they can firm up a bit. I glue the track down on a bed of 2mm thick closed cell foam with PVA. The foam is sold in rolls 300mm wide by several meters long and is used as non-slip liners for drawers & shelves. I don't pin the track down, I just weigh it down until the glue has gone off as I find you get a more even finish this way. Once the glue has dried I ballast using washed & sieved gravel from my drive/yard. The process I use is detailed in this MRF thread.
Once I had layed all the track I had on hand I decided to have a crack at making some trees. I had bought some ready made trees, but was unhappy with the look of them and felt I could do better. I used copper wire for the trunk & branches and some coarse scenic material for the leaves. I made four small samples which proved the theory, next time I will make some taller versions. I solder the strands together in the middle to form the trunk and splay the base and top to form the roots and branches. Keep soldering extra wire to the top to form more branches as required.

After a coat of brown paint, I use spray laquer to stick dog hairs (I have three donors to choose from!) to form the smaller branches. Once dry I then spray on more laquer and sprinkle the green scenic scatter onto the branches. You have to do this two or threes times to build it up and then give it all a final going over with the laquer one last time to seal it all.
I have also repaired and painted an old Tr-ang crane that I bought as a wreck with a broken boom and made up a match truck/tool truck to go with it out of a spare wagon chassis I had. The crane will end up in the firewood yard, pushed around with a Tri-and dock shunter that is on my 'to be fixed & painted' list and a long list it is too
Some more pictures of what I have described above.