Suggestions by @thevanman

Lucas Till

as Cale Yarbrough in God Speaks of Marty Robbins

Score: +1

Tim Allen

as Cotton Owens in God Speaks of Marty Robbins

Score: +1

Andrew Lawrence

as Little Jimmy Dickens in God Speaks of Marty Robbins

Score: +2

Miles Teller

as Marty Robbins in God Speaks of Marty Robbins

Score: +1

Candice Bergen

as Jennie Vincow in Ramirez

Score: +1

Oscar Isaac

as Miguel "Mike" Ramirez in Ramirez

Score: 0

Jake T. Austin

as Richard Ramirez in Ramirez

Score: -2

Bill Hader

as Andy Kaufman in Man on the Moon

Score: +3

Joe E. Tata

as James Croce in I Got A Name

Score: 0

Joe E. Tata

as Elderly in Face Claims Sorted by Age Groups

Score: +1

Dana Carvey

as Fix-It Felix Jr. in Wreck-It Ralph (1990's)

Score: +6

Craig Roberts

as Jeff Beck in Blondes Have More Fun

Score: +1

Tom Holland

as Jimmy Powell in Blondes Have More Fun

Score: +2

Ben Hardy

as Rod Stewart in Blondes Have More Fun

Score: +1

Joe E. Tata

as Cameos in Stan Lee Biography

Score: +1

Ansel Elgort

as Frank Sinatra Jr. in A Short Marriage That Ended with A Divorce in Mexico

Score: +1

Joe E. Tata

as John Carter in Sins of the Father

Score: +1

Andrew Garfield

as Bernie Leadon in Twenty Thousand Roads

Score: 0