Abstract expressionist painting, Squidward character, vibrant turquoise background, swirling clouds of purple and pink, bold black outlines, expressive brushstrokes, textured impasto, glossy accents, whimsical tentacles, melancholic eyes, introspective posture, leaning against a abstracted easel, artistic studio setting, scattered paint tubes, half-finished canvases, dim softbox lighting, moody atmosphere, impressionist color palette.