Hi all, a newbie here, I've recently tattooed a scorpion on my leg,which i'm quite pleased with as it was my first I did myself. The question is what is the best type of needle to use for colouring? as it seemed to take me ages using 13Mag and 8 round, i thought i'd coloured in a lot untill i wiped it and found there was hardly anything there. Also whats the difference between a Liner and a Shader machine? I have two machines supplied with a kit I brought. I hope someone can help, and yes I will eventually upgrade. Thanks in advance.