here's a landscape speedpaint I worked on a bit yesterday and the day before. It's inspired by the colors of Thomas Cole, one of the Hudson River School painters of American landscapes. (By inspired, I just mean looked at-- I didn't colorpick.) I also based it loosely on one of his paintings.
Still not done yet, but thought I'd post my progress in tutorial form. Hope you find it useful.
Anyway, composition still bothers me... I think it's a bit too choppy with too many similarly-sized shapes breaking up the space... Live and learn I guess.