Composition can be daunting. The good news is you can learn about it and get better with time and practice!
When I’m in the field, I always look for interesting shapes, patterns, lines and texture. Once I find a potential subject, I evaluate the intensity of the light, its direction and the need to use filters or not. I identify distracting elements, determine my focal point and move around to find my composition. I establish the depth of field, what should be in focus and which lens to use. Then I set up my tripod, which is essential in order to get sharp images. After taking my shot, I check the histogram and the clarity of my image on the back screen. From there I can adjust my composition accordingly. I find that seeing my image on the small screen tells me right away if the composition is good or not.
I believe that a poor image cannot be fixed with a software so I prefer to take the time to compose my images while I am in the field. I also prefer to spend my time outside rather than in front of my computer!