ROME (AFP) - World number three Ana Ivanovic is one of the most improved players over the last year and the Serbian beauty is aiming to make 2008 her breakthrough year in the Grand Slams. The top seed here in Rome reached the finals of last year's Roland Garros and this year's Australian Open, helping her to a career-high number two in the world rankings. Now she has set her sights on finally lifting a Grand Slam title and the Rome International is a vital part of her preparations for the French Open, which begins in Paris later this month. Rather than seeing herself as an up-and-coming outsider, Ivanovic now considers herself one of the best. "Since Berlin last year I feel I've improved so much and I have matured a lot on court in my game," she said."I feel I'm playing more consistently and I've also had lots of wins over top players, which for sure has given me confidence."I'm just enjoying this time. This is the best time of my career so far, the highest I've been ranked and the best tennis I've been playing."I just want to keep up the hard work and also the results."She has won only one tournament this season but that was the Tier I event in Indian Wells, in which she beat Jelena Jankovic and Svetlana Kuznetsova in her last two matches. However, other than against Jankovic, Ivanovic generally has losing records against the other top players. And in four previous attempts, she has never beaten world number one Justine Henin. But with the little Belgian's powers seemingly waining a little this year - she was beaten in the quarter-finals in Berlin last week by Dinara Safina - the Serbian believes Henin's reign at the top may not last too much longer. "Justine definitely earned her position (at the top). She played amazing tennis last year and won lots of tournaments," said Ivanovic. "She definitely deserves her position. A lot of players are aiming to catch her up so it's very, very tough to remain in that position. "There are a lot of girls that are playing much better, like the Williams sisters (Serena and Venus) and (Maria) Sharapova, they're playing more tournaments. "I think it's very exciting at the moment in women's tennis."