Only pics I can see in your galary Slaanesh Termie ?! Are pretty rough to be harsh mate :-/
If your after a "wash" to brighten a figure your really in the wrong ball park
tbh, you are looking more for a highlight ?
Tbh black washing can make something look worn but the pics need to be better lit as it currrently just looks messy :(
This is an example ( from my gallery ) of using a black wash to make something look dirty. I am by no means a good painter though.
As for Emperors children, I am not really a fan of the Changeling Pink , I do however use it on my Emperors children as a base colour to brighten up the purple / red I use for the top coat. I also black wash areas to make them look more "authentic" or as if they have seen combat.
Although I will conceed that the picture is not the best
I guess what im saying is, dont over do black washes ( although i am guilty) there is a thin line between "worn" and "messy paint job"
Also try to take your own pictures in a better light ( and post links cos us intrawhebzors are a lazy bunch and dont really want to click all the way to your gallary !)