/ic/ - Artwork/Critique

First time working on landscapes. Still far from done, and more of an experiment.

Si far, I understand that it is not meant to be as detailed as figures, with simple, wide strokes for the background doing, while the foreground takes a little bit more importance.

Then there's tones and values, which gives more shape to the picture.

And then there's stuff like perspective, lightning and shadows to give it life.

And then there's Hard Lines, Soft Lines and Lost Lines which I don't fully understand and would like a brief explanation of, if you would.

Is there anything else?