I forgot to activate symetry, is there a way to mirror the already made topo to other hand also and keep making the low poly mesh in symetry mode?
http://desmond.imageshack.us/Himg28/scaled.php?server=28&filename=93543393.jpg&res=landing
Yes. It’s under Tool>Deformation> Smart Resym
In short, you mask the part you want to keep then click this button and it will restore the symmetry to the other side. Here is a video as well.