Stickers: You can use nail stickers; they are not only for kids. They are sold in many discount stores such as Target or pharmacies such as CVS. For this, do your regular manicure, but do not apply the finish transparent coat. Wait until it is dry and put the stickers, and then put the transparent nail polish. You may apply two coats.
Brightstones and nail jewelry. Apply it just like the stickers. You can form your own designs and apply them to the nails. To put them on, you will need tweezers or a similar instrument to lift them and put them in place, because they are tiny.
Inspiration. Where to find inspiration? From everywhere, but if you need help, you can look for designs on the Internet, Asian magazines (even if you do not understand the language) and nail magazines.
Nail Design Tips
Pattern with dots nail color
Pink and flowers nail
Pink Nail Color
Yellow Nail Polish