Well, looks like a couple of requests :) Thanks ladies.
Here's a preview.
The brushes come in black (with tint selected, so it will be the colour of your stroke when used), and colour (with hue shift selected, so the shades will change depending on the stroke colour). To use them, make a circle and then use the brush tip you want on the circle. You will need an extra circle for the centre of the flower, as shown.
Download link has expired.
You can download the actual brush set from here, I decided to make a separate brush file, instead of including it in the final Illustrator file.
Personal use only! Do not use commerically without contacting me first (as easy as leaving a comment). Thank you.