I have a great deal of interest in my paintings, so I thought I would share some of the things I do with you:
First of all it is very important to know your colors and values, make a chart of all your colors, paint each color three times on your watercolor paper, first full value next mid value then light value.
By doing so you can choose which value you wish to paint whether it is a flower or scene etc. this adds depth and interest to your paintings. Purchase a color wheel it will help you a great deal.
Then work with the three primaries Red Blue and Yellow mix them together and see how many other colors you can make.