Luck! XD

Seriously though, What I did was this - I coloured the gown one fold at a time, using Mulberry Prismacolour marker. After that, I coloured over it with the mulberry Prismacolour pencil, just a flat colour. Then I shaded it with Tuscon Red and...Some other colour, I can't remember now...the pencils, that is. Then I blended it together using the colourless blending pencil. Then I went back and shaded it more with the same colours, and this time adding black to it. And then I blended it again...I kept doing that until it pretty much turned out how you see it there, with the added step of lightly putting a highlight on the non-shaded parts with a white pencil...and blended in that as well.

That's pretty much it! I did that for every fold in the gown, as well as the top and any other place that was part of the gown too :)