simple otter pencil drawing on white background

otter pencil drawing white background rtx style clean inking sharp david nordahl samuel silva simple illustrations scientific brushwork outline vector monochrome coloring page artwork animal wildlife black art nature sketch artistic rendering fine creative detailed realistic technique portrait natureinspired theme expression lover enthusiasts hobby inspiration captured linework sits gracefully water photorealistic accuracy showcases otter's strong facial expression light magenta tones add depth use ferrania p30 film enhances rendering generated