Playing in front of people makes me nervous.
Most people get nervous playing in front of others. Start small. Have a go at playing in front of friends or family slowly building confidence. Also, perform the pieces that you have been playing for a long time. An easy piece played well will always sound better than a harder piece played hesitantly.
Try to perform as much as possible and the more you do, the easier it will become. Nerves are not all bad - our experts say some small amounts of nerves can be helpful for a little edge and adrenalin.