Add a center – I usually try and stick with black or yellow as my center. Yellow is a good color to use for lighter flowers (soft pinks, whites, etc) and black is good for darker or stronger color flowers (fuschia, red, etc – basically we just want the center to be seen) I am using a Round 2 Paintbrush for my center, but you can use any size as long as you are soft with your pressure. I make a dark circle in the center of my flowers, sometimes I like to leave a tiny white circle in the very middle, or I fill it in completely. Then I do a series of dots surrounding my center. I leave a bit of space between my main center and the surround dots.