<https://s.mj.run/aHquTNGSEKg> use this image to create a vintage-style cartoon avatar featuring a confident facial expression similar to the 'sigma face' meme. The character should have a strong jawline, arched eyebrows, and a smirking expression that conveys charisma and boldness. The design should maintain clean lines and a hand-drawn vintage aesthetic, using muted tones and soft shading. The background features a retro-inspired gradient, transitioning from teal to deep blue, overlaid with subtle, evenly spaced polka dots that blend seamlessly into the vintage theme. Ensure the overall composition is memorable and uniquely stylized, --ar 1:1