How is using prismacolour markers "not painting"? You're still using a brush (pen) to apply paint (ink) on your model.
However seeing the number of models and sashimono you have (not sure if you're just gonna do your wraithlord and stop there) it might be much easier to print off a sheet of decals and work from there.
You appear to have some photoshop skills, and that's all your really need. Here are some examples:
The sashimono has a decal with the mon and kanji characters:
Also, here's a more intricate example (miniatures by Age of Egos) of a commission job I did with a banner. The banner (as you might recognise) is artwork from the
40k CCG. In this case the entire banner was printed out as a decal and applied to a thin sheet of plastic which was then finished off.
In any case, try whatever you can. Miniatures painting is a multi-media art, and anything goes really. The ends *always* justify the means.
Cheers