Spraying red after white

[dibble34]

hi all hope you don't mind a question from and amateur! I have just finished my first shell and the last colour to go on was white. when i take the window masks off i would quite like to score a line round the masks and have a red frame. my question is will this show through the white and ruin the shell? it has taken me ages to do so would be gutted if i wrecked it now!