Shape your nails and take care of your cuticles before beginning the process.
Make sure you apply a base coat to ensure that your nail paint stays on longer. Apply this from the cuticle and move till the tip of your nails.
Choose the nail paint of your choice and then begin painting from bottom to top. If you happen to paint outside of your nail, you can always clean it later using a Q-tip dipped in remover.
Once the first coat dries, apply a second one.
How To Apply Nail Polish