Murray, love the background and like the foreground grassy area. Same suggestions as others regarding the number and size of the focal point trees. They may very well be exactly right based on your reference, but this is your world (to misquote Bob Ross) and you can create it differently to increase interest. The old "rule" is that your trees should not be even numbers nor exactly the same height. That's the only part that doesn't work as well for me, but overall it's a very good painting.