I recently came across an interview with Steve Johnson, a special effects make-up artist who trained under Rick Baker in the 80’s. He relates a story about sculpting the monsters for Poltergeist 2, about how he used to spend a lot of time working slowly and meticulously, making sure all his work was symmetrical and perfect. H.R. Giger, the man who designed the ALIEN and on whose designs Poltergeist 2’s creatures are based on, told him he shouldn’t think so much when he sculpts, that he should just get it all down as fast as you could. Johnson now swears by this method. Far be it from me to disagree with H.R. Giger so I’m giving it a go.