ZBrushCentral

zsketch question

ok i love what i have so far in my sketch and really want to push the geometry to stay very close to the zsketch. As of now when I hit A a very very loose representation of what i see shows up. Any solutions to this?
thanks

robotzsketchdesign02.jpg here is that sketch i liked so much. The answer to my question is to up the resolution number under the unfied skin menu.