Trefoil knot on a pair of joined Seifert surfaces

The trefoil knot is the link of algebraic singularity z^3+w^2=0. The exterior of the trefoil in the 3-sphere fibers with fibration map (z^3+w^2)/|z^3+w^2| so that level sets correspond to Seifert surfaces. I've chosen the Seifert Surfaces corresponding to +1,-1 and glued them up along the trefoil or equivalently, I've placed the trefoil along the surface Im(z^3+w^2)=0.