Cut 3" x 3" pieces of cloth squares. Each square will be one petal. You can have anywhere between 8-14 petals.
Anything more or anything less doesn't look right to me.

They can all be the same fabric pieces or you can have different ones.

Turn your cloth around so that the back is facing you. Bring point B to point A.

OPTIONAL: you can iron the fold down for a better shape.

Bring point A to point B.

This is what it should look like now.

OPTIONAL: you can iron this new fold as well for a better shape.

Now turn your triangle so that the long bottom open end is facing you and the smaller opening is facing your right.

Pinch B and C together and fold over to A along the red line.

It should now look like an even smaller triangle.

Fold line A to line B so that they match up. Don't fold both flaps just the one at the top.

It should look like this.

Now turn the piece around so that the flap you just folded is facing down.

Fold line B to line A so that they match up.

It should look like this. Now holding the piece together cut off the bottom piece from where the red dashed line is.

The front should look like this.

The back should look like this.

Double thread your needle because if you don't the thread will rip when you tie it together.

Insert needle through petal like so. Repeat steps 1-15 (except 14)for the rest of your petals.

Note: Make sure all the petals are facing the same way when you insert them onto the thread.

This is what it should look like with all your petals inserted.

Turn the flower around and tie both ends of the thread. 3 knots should do the trick.

Turn it around.

With a marker or your thumb flatten out the petals.

Finished flower.

You can get creative with the centers. I usually glue on rhinestones or a cluster of beads.

You can attach an alligator clip to the back or a brooch. You can also add them to plain headbands. The possibilities are endless