Here you can find a few tutorials on how to blend the acrylic painting.

Here you can find a few tutorials on how to use your brushes to get the most out of them.

The above photo is by Jan Huber. Here you can find a few tutorials on how to paint trees, with Ian Harris

Here you can find a few tutorials on how to paint trees, with Dranitsin

Here you can find a few tutorials on how to paint clouds, with Ian Harris