When you are in the Village of Outcasts, head down. Go over to the frog. You have to perform 3 frame perfect mirror jumps. After that you should be able to move Link in the Light World. Move him as high as you can. Perform one more mirror jump and that should be enough to walk to the frog. This skips the Titan Mitt however is extremely difficult. You will still need the Titan Mitt for the Desert Warp to Misery Mire.