Tie a double knot on the end of the thread.

Thread the other end through the needle, leaving a short tail.

Push your needle up from the inside of the fabric, going through the middle of the stain.

Push the needle up again, catching the inside of the loop. Make a small stitch back down into the fabric, over the edge of the loop.

Keep making petals, using the stain as the center point.

There you have it!