Hmmm. I know this was meant to be "rough" but it's a little randomly too tough.
Vectors are usually smooth, or if rough, they are solidly rough- or their lines are rough but thin.
Your lines aren't exactly smooth (for the "rough" look) and to be honest I really don't like the
double outline because if you wanted more than one outline that'd be a sketch and you'd need many many lines
for it to look like one.
Just a suggestion to just keep your lines singular at this stage. You could colour in her eye lashes black, and perhaps
add more lines and detail to her hair. Shading shouldn't be too hard for you because I can see some shadows in her
hair- you might want to create a new layer, figure where you would like the light to hit her and use a brush or pentool
and make a chunk of white. Then you set that layer onto a lower transparency.
Overall the sizing and proportions are well done :) You just need more details- kudos ^.^