The Joey Branning actor told The Sun that Foreman, who plays his on-screen dad Derek, gives him feedback between scenes on the soap.
Praising Foreman's influence, Witts explained: "Jamie is a big fella but he's a big softie really.
"Under that tough image he's got a heart of gold. I hadn't done a lot of work on screen before and he has really taken me under his wing.
"He's been there to tell me when I'm rubbish and when I'm doing well, so that's really great."
Witts added of his inexperience: "I was absolutely bricking it when I came to my first scene."
Meanwhile, the star also declared that he isn't similar to his lothario alter ego Joey, who makes his presence known on Albert Square in next week's episodes.