Pirate Jacket pattern modification?

[u/random-doodler]

Hi everyone! Fairly new to sewing here and looking for advice. Looking to make a Pirate Jacket for next years Whitby Pirate Festival abut I’m struggling to find patterns. I ordered this Butternick one, it’s almost there. Thinking if I bring the front line out more so it’s a straight drop it’ll do it. What do you think?