Speed painting, oh what fun! I'll have to try that sometime (not on the computer). I love this, so I must comment. And I'm a bit of an analyist, so this might be a bit long. The color palette is excellent, and I'm not just saying that because I am partial to cool colors. Analagous color schemes have a certain feel to them that borders on surreal, and the rough detail of speed only adds to that effect. The colors are also used well to break up the space into the different objects: sky, tree, water, etc. This is enhanced by the variation of textures. The leaves of the tree, for example, are very well done, as are the strokes for the water, and being done in different ways shows that they are separate objects, even if they share some of the same color. Also, great job in balancing the color across the painting, like with bringing up the light blue of the water highlights into the leaves and mixing sky into the treetrunk and ground.
Overall: well done! :D You get a gold star! *
Beautiful! I really like how you paint water. Love the colors as well. =)