I agree with ole, the trees look too shiny and plastic in the pictures, maybe a coat of dull laquer or varnish might help? Other than that I like it

I think this is a smart way to recycle a kit if you're not happy with the paint job
I used a technique that gave a similar effect when I had to create a sea bed for a game of dungeons and dragons a few years ago. Got some cheap ship, boat and anchor ornaments and then covered them in PVA then dunked them in a sand and bicarb mixture, when they were dry I just dribbled thinned acrylic browns and reds and greens over them (like weathering), then added some railway scatter to give a seaweed effect. Was simple but surprisingly effective.