First of all you’ll need a hair-pin with a large surface, lots of pretty feathers (I found mine in the park) and glue.

It’s very easy: just put some glue on the hair-pin, place one feather on the glue and hold it for a while. If you don’t want to hold the pin until the glue dries, you can also use another pin to hold it.

Keep doing this until you’re satisfied.

There’s also an easier way if you don’t have enough patience for the first one. You’ll also need glue and a hair-pin, but the feathers should be looking like this:

Just glue it on a hair-pin, let it dry and you’re done!