Here's the first exploratory tonal sketch for the roses. By doing this I found out more about where the light falls on the blooms and also started to work out which leaves would be highlighted in detail and which would be simple shapes in the background. The arrangement is just about ok as it is I think. That's something I tend to do without thinking...find a composition with the camera when I first take the photo. Now on to ink and pencils to find out more...