Crafted some teeth out of sculpey-clay, colored with acrylic paint, and given a shine with some craft-glue,
Re-made the eyes with some scrap black meshing and also colored with paint, had to use several mesh-layers but still great visibility!
Started working with the yellow and white vinyl and found it rather easy, though will probably have to make a few more attempts at getting the horns right... not exactly looking forward to covering the jaw-spikes though ^^;...