Looks good but it needs some atmospheric separation and level adjustments between the foreground and mid ground. The tree, figure and hill all have the same value and levels as the mountains behind the lake which makes it look flat and difficult to distinguish elements. Just squint a little or look at the image at the size of a stamp or blur everything and if everything still reads then you're on the right track.
With the light source behind the mountain then there will be shadow over part of the lake and a orange/purple light will hit the hills behind the tree which will help separate the foreground and background a little more. Anyway hope that helps. Take care.