Ink and Wash Racing cars

I've tried ink and wash before once or twice, and really wasn't impressed with my results. Now, though, having produced a few watercolours that I like, I decided to have another go. This is based on an old black and white photograph.

Here's what it looked like before I applied the colour: -

ink sketch - grad prix cars

- and this is the finished painting -I did add some more ink as I went along as well

Grand Prix - ink and wash