The 61-year-old singer, who represented the UK with 'Believe In Me', finished 19th out of 26 acts last night with 23 points.
The Welsh singer is flying the flag for the UK at the annual contest, which takes place at the Malmö Arena in Sweden this evening.
Bookmakers have given the Neath-born singer odds of 40-1 to win the contest, which will take place in Sweden.
The Swansea singing star Bonnie Tyer has told ITV News how she's been brought "almost to tears" by messages of support from fans.
Twenty four hours before the Eurovision song contest begins in Sweden, Bonnie has been performing in her final rehearsal, as Mike Pearse reports from Malmo.
Bonnie Tyler has performed at her last major rehearsal before the Eurovision song contest on Saturday.
The Neath-born singer will perform 'Believe in Me' on stage in Malmo, Sweden.
Speaking ahead of Saturday's Eurovision Song Contest in Sweden, Bonnie Tyler says she's been brought "almost to tears" by messages from fans.
"I've done various radio stations, and I've had people's quotes said to me" she told ITV News.
"I didn't realise people were saying lovely things about me"
"It's so positive. I'm really thrilled!"
Bonnie Tyler, this years Eurovision entry for the UK, made a surprise appearance in Sweden ahead of the contest on Saturday.
The Neath-born singer took to the stage in Malmo where the contest is being held.
Fans from Wales have already started arriving in the city for the contest this weekend.
Eurovision fans will get the chance to support Bonnie Tyler at a special Eurovision party in Swansea.
The event, which will include a live broadcast of the song contest in Sweden, takes place in Castle Square in the City Centre this weekend.
Neath-born singer, Bonnie Tyler, will represent the UK with a performance of her song 'Believe in Me'.
Cllr Nick Bradley, Swansea Council’s Cabinet Member for Regeneration, said: “Eurovision is always a bit of harmless fun, so we thought we’d do our bit to get in the spirit of things and show the competition live on the Big Screen.
“But there should be even more local interest this year because of Bonnie’s involvement. She’s a proud local girl who went onto superstardom, so I’d encourage people to flock to Castle Square, let their hair down and enjoy what’s going to be a night to remember."
Bonnie Tyler says she's worried her song is "too good" to win the upcoming Eurovision Song Contest.
The 61-year-old from Neath will sing 'Believe In Me' at the competition in Sweden next month.
"It has been said to me over the last couple of weeks, 'You're not going to win this Bonnie, your song's too good'. Eurovision - you can't guarantee that it's all about the song, but I'm going to give it my best shot and I think we've got a good chance of having a good score at least - I hope."
"I'm not going dramatic, I'm going Bonnie Tyler. I'm not having backing dancers on the stage. I've got musicians and backing vocalists on the stage."
"I only wish that my mother and father were still alive to see it, because they loved the Eurovision, and they'd be so proud."
Bonnie Tyler has told ITV News that her entry into the Eurovision song contest was written at the dinner table with a friend in Nashville.
She said: "I've got a great song written by Desmond Child, who is a world class song writer, and also a friend.
"Part of the song was written at dinner in Nashville - because we are friends. He didn't know this was going to be in Eurovision."
Bonnie said it was "very exciting" to be taking part in the contest.
She added: "The news came a little bit earlier than we expected."
Singer Mike Nolan, who won the Eurovision Song Contest for the UK as part of Bucks Fizz in 1981, says he's "really surprised" by the choice of Bonnie Tyler this year.
"They picked Englebert last year, and he really failed miserably" he told ITV News.
"Bonnie Tyler's a real rock singer. She's very very successful in Europe, but Englebert was also successful. I don't know how she's going to do".
"No matter how good the song is, they could get the Queen to go on and sing for us - and they probably wouldn't give us the votes then".
"[Bonnie] doesn't need it to lift her career - she's already an established artist".
Welsh singer Bonnie Tyler will represent Britain in this year's Eurovision Song Contest.
The 61-year-old, who was born in Skewen, will be heading to Sweden in May.
David Wood reports.