Looks awesome! The lines will really make it pop! It looks fantastic, and the lines will add that "organized" look to the speckle, and make it look "constructed". Its the same priciple as a wash and dry brushing. It just makes the model look "real". I think that the same will happen once you break out the mechanical pencil and draw a few lines.
It also looks like you've perfected the speckle technique. The latest areas look more like the original then the fisrt ones... not that the first ones were bad... mind you. This build is in the stretch run and its been a true pleasure to watch unfold. Its funny how this "seems" to be a simple build but turned out to be a lot more complicated then anyone would have thought - you included I'm sure...
Bravo
Jedi Dade