And to add to the above : there is nothing wrong with unwrapping a cube as 6 islands. That's part and parcel of the whole hard edge approach. To our dear friend Jake Gyllenhaal : what about trying things out ?
You want to look to the forms of the whole head, preferably the whole body. You can use a free app like Daz3D for reference. The modelling work you have done indicates you started at a high resolution which makes it almost impossible to control your mesh. Work from low to high. You can sculpt eyes by placing a sphere in…
I've been working on this one for alittle bit now i decided to try a few different things and put it together. The whole big break down is on the artstation link below. Let me know what you think. https://www.artstation.com/artwork/g0DwaG