I scanned this image, dropping out the rough logo and copy, and using Photoshop, altered the pencil tones to a light blue. I then printed this onto bristol board.
The Forry portion of the piece was fully colored/painted -- with the messy elements on his desk just suggested, and fading away into white in the corner of the piece. Using blue inks I added more depth and detail to the "background" monsters/actors. I also printed out a light blue scan of FJA's "Frankenscience Monster" book and with x-acto knife and glue, placed it in Karloff's hand
The next step was to scan this and start playing with contrast, hue and saturation in Photoshop. I bumped the blue up to a darker purple and tried a greenish background color.
Next step was to hand draw the logo, scan it and combine it with the already existing illustration.
More fussing with color -- a deeper reddish orange for the background, and a little more contrast saturation on that purple. A little "Sam Scare" head was added by the logo, as well as all the cover copy requested by Dennis. A few minor tweaks, and it's done. Look for the cover below on your newsstand in the not too distant future!