I had good fun with this yesterday. Used a piece of the back of an old painting and just set off with a little bit of drawing with some watercolour pencils right in the middle plus some loose washes of the different colours I could see in the flowers. Then worked my way out, adding more flowers. I had a vase of about 5 flowers in front of me and I kept turning the vase to get different views. I suppose I was trying to get them to look as if they were growing outside in the garden.
They turn different colours as Autumn advances and they have speckles, and colour changes within each petal. They almost look like a watercolour painting! I like painting them because each flower is made up of several different florets and you can go into the crevices with negative painting to create depth within them.
I used quite a lot of pencil rubbed against sandpaper to make the speckles. Good fun!