Create a detailed pencil sketch logo of skull, ink and pen, isolated on black background, ink drops, paint splatter, colorful that combines the following elements into a cohesive and harmonious design, perfect for a tattoo. The sketch should feature a realistic skull with dreadlocks, wearing snow goggles with 'NAI23' written on them. The skull-octopus is waving with one tentacle, looking innocent with sparkling eyes and smile behind his two noose tentacles, and in the background, there is a snowy mountain. The design should have a balanced visual focus between the octopus and the mountain, and the overall composition should be vertical