I'm also pretty handy with Photoshop! I'm a colourist for Sonic the Comic - Online!, a continuation of Fleetway Editions STC from the 90s. I can flat your black and white artwork for you; be it a comic page or a splash page, pinup etc... I can provide base colours for use as part of the artwork or just for the purposes of selecting areas. I can save selections as separate channels too, if necessary. I'll send back your artwork plus flats as a .psd and as an image file.