With love and patience to bulid up the confidence.
Start from something simple that he/she can definitely handle. Then teach the skill how to make better. Once he/she can achieve, make a exaggerate praise, verbally than any phsyical gift. Keep doing this and will see the effect.
Kids should understand that no one is good at everything. They need to explore their strengths and tackle their weaknesses. My wife and I set achievable targets for our two sons. We encourage them to try their best in everything.
Kids sometimes complain about their failure. Learning to face failure is part of the learning process.
Many parents in Hong Kong focus on academics only. We live overseas. The education system here encourages kids to learn through games, team work, their own research of topics, etc.
Praise your daughter more and show that you care about her. She will gradually lose that internal fear of failure and that inferior feeling among her classmates.