When painting woodland scenes we usually want to show depth in the picture. We can do this in several ways. I find it works pretty well to do a soft wet into wet background. When this is dry any amount of leaf and forground detail can be added. In this case I have avoided the use of masking fluid and negative painting by using body colour to add detail.
I like to work quickly and in a loose impressionistic way and this technique suits me.
Tip: The front tree touched the top and bottom of the image area while the middle ground trees just touch the top. The distant tree do not touch the top or bottom. A composition like this helps to give the impression of depth in the picture.