Spider-Man is on an exciting adventure climbing up the side of a tall building. His classic red and blue superhero suit is decorated with spider web patterns, and he wears a black mask with white eyes on his head. His web-climbing pose is accentuated with large, black eyes and a tiny smile that speak of resilience and confidence. In his right hand, he holds a black and white spider - a symbol of his determination and agility.
For the best effect, you could start by shading in Spider-Man's suit. Make sure to give particular attention to the web patterns, ensuring you create clear outline edges as well as rich mid-tones and shadows. You could bring the red and blue together by blending the two primaries into purples and crimsons where they touch. You could add a splash of vibrancy by coloring his mask and spider in bright contrasting colors - perhaps pink for the mask and a vibrant green or yellow for the spider. The eyes, mouth and webbing should be done with darker shades of black, grey and white. Finally, think about what kind of background color could bring this fun Spider-Man scene to life - if you want to keep the focus on him, a lighter tone of purple might be best.