MickoDaimaio's trade

MickoDaimaio, an artist I once asked a commission to, was taking trades. Given that money is not coming in very fast, I thought I'd give it a try. It took a while for him to send me his idea for what he wanted, and decided to ask me to draw a new OC of his found here: 

What he wanted was for her to wear a blue bikini, but strangely enough, my old paint programs just don't work with Windows 8.1. So, for now, I'm stuck doing line-art.