Knowing you need to learn how to create better images is definitely a good start. The main problem with these is the lighting is lousy. The first two are in splotchy shade, with lots of hot shots, and the last one also looks like it was taken in pretty direct sun. A good first step is to find some nice shade to photograph in. If you really want the pop of professional photos, you will need both sharp, fast glass and to learn how to use available lighting to its best advantage as well as working with off camera lighting.