Most efficient way to draw on blocks?

[Hackusater]

I want to be able to paint in minecraft but I can't figure out a efficient way to draw without gaps in between.

Here is my skript:

on rightclick with shield:
    wait 10 ticks
    while player is blocking:
        test(player)
        wait 1 tick
   
function test(p:player):
    set block at target block of {_p} to stone

The problem is, there are gaps in between when drawing so I am trying to find a way to make this skript work without gaps, thank you for your help!

 

[IDuckz_]

Remove the "wait 10 ticks" then try again.