Yeah. This pic is perfect. xD
Deleter-screen is a special tool to make the 'special-effects' and different grey tones in mangas. Like this:
http://www.animecastle.com/pc-96100-18293-deleter-beginners-tone-sets-j.aspx
It's hard to explain how to use it but you'll see what makes the difference when the pics are done with it.^^