Re: landscape 4
Agreed about the shadow.
Apart from that, this is a nicely stylised painting with the tree giving off a semi-abstract feel, in fact the entire scene looks and FEELS like a semi-abstract piece, a genre I particularly like, especially when combined with a hint of impressionism. The warm colours, and I note they're not showing correctly, are actually very pleasing, in a contradictory sort of way, but they are effective.
One thing that is definitely worth noting is that this landscape is definitely one to catch the eye.