When studying watercolour painting techniques, I kept hearing "Practise, practise, practise!"
Any discipline, be it physical or mental, involves practising. A marathon runner needs daily practice, so do artists. In order to get better at art, you can start your day in the studio with warm-up exercises, such as colour mixes or trying different brushes to discover their potential strokes.
I have been exploring palettes, water, pigments, paper, brushes, and reading many digital books on the subject. As well, I have watched several videos, and completed many online video courses on watercolour painting techniques.
Review and revise
On the opposite side of my studio from where I paint, I place practice pieces, beside works in progress. The distance helps me see 'errors' and decide which painting technique will fix these.
Techniques for painting with watercolour are numerous and, depending on the instructor's ideas, can be different from one book or video to the next.
Playing with watercolour is both exciting and frustrating!