Pen and wash practice

I have been having a go at a tutorial in Paint magazine by Sue Williams of a pen and wash scene.  The camera hasn’t picked up the colour all that well, but having said that I could have added a bit more colour in the grassy areas.  I am not sure whether I should keep going with it and add more colour to the foreground or just leave it be?  I think I will leave it for now and I can always go back to it if I want to later.