Painting a subject, whether it is a person or a landscape, it is important to first observe your subject. You have to get close and personal to what you are painting. If you want to learn how to paint great landscapes, then you should spend time near the area that inspires you to paint in the first place. Only then can you really understand how to transfer what it is you see to canvas.Painting with watercolor on location is quite challenging, especially if you are a beginner. The scene is constantly changing. There are certain techniques in watercolor that require the paper to be at certain angles, or the paper needs to be saturated to a certain degree, etc. To get everything right within such a short time span is quite difficult, which is why you should bring a camera in the event you are not able to capture the scene.painting objects in the foreground that require great detail, do not try and paint every single leaf or blade of grass that you see. This will usually create too much detail that will draw focus away from the center of interest in your painting. It is also far too time consuming if you plan on painting on location. Besides, a painting is not meant to be an exact replica of what you see, rather your unique impression of the scene. If you want exact details, you are better off taking a photograph.