I recently made a ply stubbie, I designed the graphics on my computer easy enough, I printed two large stickers one for top, one for bottom, the material is UV ink on adhesive paper UV laminated, the result is like plastic paper, it sticks on easy with a hairdryer just keep a bit of overlap, for insurance I applied resin over the top afterwards. OK lucky for me I printed this at work for free on a large format plotter, It would cost about $80 at a digital printing company give or take. A bit of a tedious task next time I will just paint it and go with a red rocket!!
Hope this helps a little bit