Minecraft Creeper face inserts. I found a creeper model I liked from Iain Willis' page and made eye and mouth inserts to accentuate the face of the model. I printed mine in Galaxy Black and it came out really well. The print is modeled at 100% of the original Creeper model so when printing the face model scale it down to 99.95% or lower so the pieces will fit in properly. They should fit in snug with no glue required. I did use a hammer to get them in easier. They will sit flush but I left my models with them protruding a little for a more block effect.

Bambu P1S

Galaxy Black PLA

Nozzle: 0.4

Layer: 0.2

Walls: 2

Density: 100%