Check out this quick tip from international educator Melissa Garcia for erasing visible fill...
Nail Art Tutorial: 3-D Orange Party Nails
Step 11: Where you have a space left, place a small mixed green ball. Create a two tone ball with your two green acrylics in the same way you have done with the white and orange balls, making the darker green your main color. When placing your ball, place the lighter side next to the flower.
Step 12: After cleaning your brush and rolling into a point, place the pointed end towards the flower and press downwards and lightly drag outwards to begin to create your leaf shape.