I just did mine today .
I used red "fabric mate" pens that i purchased at hobby lobby.
they cost $2 a pen and i kind of went over kill and bought 6 when i probaly could have only used 1 or 2 .
it took me and a buddy of mine a few hours. i think it turned out really well
we would draw a few inches , wipe it with a damp rag, clean it with a dry rag and then repeat ( i included a video )
the dye wipes off really easy
here are some pics along with a vid and feel free to ask questions