I used purple nail polish as base for my nail art and painted the flowers with acrylic paints...I know it may sound weird but it really works! All you have to do is adding top coat at the end to protect the whole decoration.
As you can see, it is not perfect but I hope you like it, and you'll probably be able to make it better than mine! :)
Step 1: What you need
Apply your purple nail polish and let it dry too.
You may need more than one layer of nail polish, it depends on how bright your color is after the first layer. Remember that it must be exactly like the color of your nail polish bottle to be perfect.
Once the nail polish has completely dried, use the buffer to rub it gently and make it matt.
This will help you to have a better effect when you use the acrylic paint. Don't worry if it seems ugly now, the ruined effect will disappear after you apply the top coat at the end.
ps: I know that my nail polish seems red instead of purple, I thought the color was as it is in reality but later I noticed that the pictures changed the color, I am sorry :(