I'm a crazy mehndi lover..I juz love to apply mehndi..no matter if there is an occasion or not.
   Try out some nice designs from this site..also there are few tips that might be useful.

How to Apply Mehndi?

You can make your own powder by drying henna leaves in shade. It might take weeks for them to dry to a crisp and you need to grind them thoroughly. You may also buy henna powder from the market.

Take....
1. Henna powder sieved through a muslin cloth.
2. Well strained strong tea decoction.
3. Eucalyptus oil (few drops).
4. Strained lime juice.
5. Sugar (one table spoon).

Take the henna powder in a bowl, add the tea till it becomes a thick paste (similar to a dough). Add eucalyptus oil, sugar and lime juice and mix well to make it into a smooth and thin paste.
Leave it covered over night or during the day if you prefer to apply in the night.

Make a cone....
Take a thick plastic cover or use any thick freezer bag - cut it into shape of rectange 7" X 4". Twist one corner of the cover to make a cone. Tighten the tip to make tiny hole. Hold the tip and fill the paste and tie the broader end tightly with a thread.

You also get readymade cones from the market.

Let imagination fly...
Now have fun. What ever you draw is beautiful and is a master piece in its own.

Remember....
You should leave the mehendi to dry on your skin and keep it on for as long as possible (4 to 6 hours if possible - you may go to bed also with it). Scrape it after that. The color will become deeper if you leave it untouched by water for another 4 to 6 hours. A deep color may last upto two weeks. The coloration varies from person to person.