Excellent tree tutorial at this site. Visual - step by step http://www.susieshort.net/watercolor-tip-blotted-trees.html
Love the colors mixed together like that. Also, love how all the petals are different sizes and how the flower is placed on the side of the canvas and not in the middle.
Original oil painting Angel palette knife impasto by Karensfineart:
Watercolor Experiments How To Paint A Tree Tutorial
Técnica que necesita una esponja y colores
winter painting step by step - Google Search
Painting by Leonid Afremov, a graduate of the Vitebsk school founded by Chagall and Kandinsky.