Jack Russell Picture Feedback

Reni has sent me a picture of a Jack Russell she has done for friend and has asked for some advice.Reni writes "How do I get sharp edges around the top of the ears etc without drawing lines, also should I have extended the neck area more?"I should also add that Reni was given a couple of hazy photos from facebook and the eyes were totally black, not an ideal start so all this considered Reni has done a great job.I am not a lover of outlining preferring instead to set light against dark, in the case here it would be the background colour that would determine this outcome. What I would do is darken the ears slightly more and lighten the background colour. It would also work the other way although I would not consider this, that is to lighten the top of the ears and darken the background.I do agree with Reni that the neck should be extended, I would bring this down roughly to the black line I have indicated on the picture above.For more feedback on member's pictures, click here.