Black undercoat, base colors drybrushed/painted on top. Based on steel washers.
Not pleased with the way I painted them at all, but here they are. Mounted on pennies.
L-R: two sides of spraypainted black alien, larger alien, face hugger, FH w/ victim, chest burster victim.
Alien Big Momma:
Wasn't really impressed by this one, never put it together. Leftmost is upper view of head; the top is the front.