Here is my process for creating the cover to Avenging Spider-Man #9 (July 2012) featuring Captain Marvel and Spider-Man. Didn't have much to go off so this is what I did!
Pencil stage drawn on 13 x 19 inch 2 Ply Bristol Board with HB and Light Blue lead.
Rachel inks over my pencils using a #2 Sable Brush and Acrylic Ink
First pass at colors in Photoshop CS3 using a Wacom Graphics Tablet (circa 2001) at 7 x 10.6 inches and 800dpi in RGB using Channels.
Next stage and coloring of line art on a separate "Screen" Layer .
Until next time...