Saving a tool should normally save the subdivisions (.ztl, not .obj). Perhaps you accidentally hit 'del lower' when aiming for the slider, which would delete the lower subdivision levels (leaving only the current one behind, which would also let you UV like the tutorial wanted). You could try Tool: Geometry: Reconstruct…
I agree with Noren. Atm it looks like a bean bag man. The lower jaw doesn't look like it is made for eating. The lumpy flesh doesnt really make sense. When doing characters its important to ground them in fact. You can use an app like Daz3D as reference to help guide your anatomy.