Morph target? If you have enough edge loops, and spend enough time tweaking (soft selection in 3dsmax, if you're using it), it shouldn't be too difficult.
*Walks in as the stench of forbidden man-love clears* The upper lip profile seems a bit straight instead of curving and looking soft. Nice work though.
Ok, i found a way to "solve" the problem roughly, even though the result is not 100% accurate, using front view/ soft selection scaling, but it's really close to what i wanted, just the edge are a little bit squeezed.
Even the blockout looks so nice allready! How did you do the roof texture/material? Substance designer or, something more manual? The plaster texture, so far is looking a bit wierd. To me it feels like it is going in diagonal lines: Maybe if you try a plaster material that is more soft, it would ressemble the reference a…