cnc this is my first time using this thing cnc, tips and trick plz

I don't use Sai, but I do have to ask, did you use line art prior to making this?

Quote from Azure Kite

I don't use Sai, but I do have to ask, did you use line art prior to making this?

^This
and also, what tools did you use. I can identify marker and brush but anything else?

Quote from Drone

^This
and also, what tools did you use. I can identify marker and brush but anything else?

I didn't use any line art I wanted to free hand the first one and see how well it would turn out, obviously not too well and no just brush and pencil