This is one that need a preliminary sketch, especially for the rocks. The rocks are not the main event,but they have more colour than they really need. And by that they ask a lot of attention. The Mirtle is just a difficult thing to paint. It needs more water, and transparency, lose edges on the side. But we been all there, you see it in front of you, but the skills, (for now) let you down a bit. Maybe this youtube video could help a bit? https://youtu.be/9kg0Y3Py-Wo