my opinion there- a tattooshould just be porportionate to the area where its placed.a small tattoo on a small part (writs,ankle),larger tattoos on larger areas (calf,upper arm) and it should be the right shape a tattoo on the forarm should be taller than it is wide, on the upper back usually wider than tall,etc. thats how i (and most professionals) would explain it. the rest is totally up to you