I'd recommend waiting a minimum of 5 years before trying a sword.
By then you should have a decent amount of skill, money, tools, and assurance that you're really dedicated to the craft. If you want to try a sword, do some knives. Then some more knives. And once you're sick and tired of knives, make about fifteen more. Swords take a lot of skill to even complete properly; making them work and look good is a whole new ballgame.