Technolomogy

Bought a wand scanner today. I'm going to be making the painted cover soon for the TPB soon and needed a scanner capable of doing a larger size scan job. Unfortunately the scanner seems to warp the image and is making it nearly impossible to photoshop together. I don't know where this mythical wand scanner that they have at Fed Ex Office (formerly Kinkos) is. That is what everyone tells me to use except for the staff at Fed Ex Office who have no idea what I'm talking about and say their large format scanner is something you have to feed paper through and would not work with canvas board. I had hoped to do a step by step scan of the image, but this thing's just not working for me.