Clown sewing pattern problem

[Soulgypsy]

Hey, I want to make the young 1963 Michael Myers clown costume but am having trouble getting a pattern similar to the style worn. There are tons of clown patterns but none match the way his arms are sewn to the body like the movie. Any suggestions of other patterns that would work? Here are pics of patterns but you can see they don’t match sewing style . Also attached photo from movie as well as a replica that I’m trying to “replicate”

 

[montysaurus]

K3713 | Men's One-Piece Pajamas Sewing Pattern | Kwik Sew Patterns Could you adapt something like this? Don't know your skill level.