Illustrative style and refinement

I have been spending a lot of time on refining my illustrative style. For a while now I have not been happy with it, I feel it lacks character...but only in a way which can adapt to individual looks. For example, a politically aimed piece that expresses disenchantment, apathy and sadness, verses an exotic, happy, bright and colourful piece and how I express that through my illustration. I need to find some way of drawing models in a way that is fitting to any type of collection I create. I will shortly upload a series of different looks and several boards which shows how I have come to what I believe to be a really artsy and fairly unique style. I am very happy with the outcome, and even happier that it comes naturally to me and that I can draw at speed with my new style.  (Boards to follow this evening due to posting on my mobile phone right now)