value studies; tells you so much!
Before beginning any watercolor the practice of a value study is critical.
Every time, I ask myself, where is that light coming from; what time of day is it?
This method forces you to think in shapes;
training you in the right-brain processes; ideal for painting.
On a personal note, I take my glasses off; studying shape and not that detail nonsense; perfect.
Squinting works too. Try it.