The actress's character Katie Sugden will be among those taking centre stage in the 40th anniversary week, as the day of her wedding to Declan Macey (Jason Merrells) arrives.
Speaking at an Emmerdale press conference about the challenges ahead, Winward commented: "I'm just really, really looking forward to it. It's definitely the biggest year that I've ever had at Emmerdale, and I've been here for a long time. It's been 11 years now. I was here for the 30th, but now I'm here for the 40th.
"I didn't realise how much I actually had for the live episode until one day when I went into the dressing room with Lucy Pargeter and Charley Webb. They both told me that I should read the script, because I have actually got quite a lot to do! I was instantly terrified.
"At this point, we haven't even had the ins and outs of how it's done or the timing. So hopefully in a few weeks' time we'll be a bit more relaxed. I'm hoping it all goes smoothly."
Lucy Pargeter's alter ego Chas Dingle will also be a bride in the anniversary week, as she prepares to tie the knot with Dan Spencer (Liam Fox).
Pargeter explained: "It's exciting, it's nerve-wracking, it's an honour and there's quite a lot of pressure. Speaking on behalf of most of the cast, we've never done live before.
"But the show as a whole is such a massive machine, and we are merely the last link to that machine. As long as we say our words right, we're just putting the little sprinkle on the top. But I'm bricking it."
However, Emmerdale's series producer Stuart Blackburn revealed that he has no doubts about the cast's ability to handle a live episode.
Blackburn said: "From my point of view, there are many, many things giving me sleepless nights at the moment - but absolutely genuinely, the cast are not one of them. I've got complete and utter faith in the lot of them."