I went for quite a simple version of this, but you can do as many flowers/colours as you want. These are the colours I used (all the new Barry M Gellys!)
I went for Greenberry Gelly as a base, painted on two coats and waited for it to dry. I then used my dotting tool to create patterns of four dots where I wanted each flower to be. These don't have to be perfect or touch in the middle as the central dot pulls it all together. I did this again with my second colour.
I love flowery nails for Spring and this will be something I try again. There are loads of versions of flowery nails around so Google can give you some good inspiration for patterns/colours to use.