First, get your piece of felt that you wish to use. You won't need much! Also, grab a piece of paper and cut out a small triangle.
Get a piece of chalk and draw around your triangle as many times as you like, each triangle is a petal. I did 6 triangles. I prefer to use chalk as it rubs out easily whereas pen smudges and often doesn't wash away.
Cut out your triangles!
Take one triangle and fold it in half. I put a pin through it to keep it in place.
This picture might be little difficult to see. But along the bottom of your triangle sew with your needle and thread.
Here is where you should have sewn.
Open up the folded triangle to get a petal that looks like this.
Do this to all of your triangles so you end up with petals.
Take two petals and place them together to they're pointing in the same direction. Sew along the edge(not your finger!)
It should look like this.
Take the two that you've sewn together and sew on another petal to the egde like you did before.
Continue to sew on petals until you have run out. Next is the tricky bit...
You now have to sew the last petal and the first petal together. (It doesn't matter if it's untidy as you won't see it)
Begin to warm up your glue gun and choose your gem!
Glue your gem to the centre of your flower using the glue gun.
Flip it over and carefully use the glue gun to put some glue on the back.
While the glue is wet, take your hair grip/slide (whatever you wish to call it) and gently pull it so it makes a 'V' shape and only one part of the grip will be stuck. Stick the bumpy or zig-zag side so you are able to put it in your hair.
Your flower should now be complete and look like this. Enjoy!