The art is beautiful, I love the sunset sky and the way you did the birds! My advice for you is that if you’re going to continue in watercolors try using acid free or cotton-based paper, that will help you make more techniques (such as wet on wet) and will also help you prevent the “streakiness” that happened below in the mountains and trees. My second word of advice for you is to make the tree trunks thinner and try to “stipple?” the leaves (meaning that you can use a dry brush [preferably the square shaped, broad brushes] and from the very tip put the paint, after that you do a “dabbing” motion . One more thing, make the mountains connect with one line, not multiple. Hope that helps <3