Baronessa

I know that you made this painting quite some time ago, but i've just found it and it's goorgeous. I had a question though: I've been having trouble adding an overall colour "tone" to my paintings...so they just look flat and unnatural. I noticed how well you've made her white skirt blend in with the reddish tones of the rest of the painting...Can I ask how did you accomplished that? Did you draw the skirt in white first and add a mask or did you add a filter over everything or something else? I just can't seem to figure this stuff out T_T 

Beautiful drawing