To convert Newman projections to Fischer projections, the spatial shape of the molecule is drawn, arranging it in an eclipsed conformation to make the Fischer projection.

Steps to follow:
[1] Passage from Newman to spatial form of the molecule.
[2] Rotation to arrange the molecule in eclipsed conformation
[3] Turn that arranges the groups that are in the plane in the background and those that go with wedges and dashed lines towards us.
[4] Molecule projection