Upon landing a pot is immediately visible to the right that holds another Twin Snakes fragment and another which is a little hidden on an alcove below the previous pot. Make your way towards the lever closest to you.
Flip it to move the gray platform up, allowing you safe passage.
Head over towards the next lever. Don't pull it yet. As you are standing on the platform with the lever, back down onto the wall once, and then up again. The goal was to place the lower saw blade on the moving platform. If it is on the gray platform, flip the lever to lock the lower lever in place.
Head down the wall and you will find a pot really near you that contains an emerald. Break it then head to the next section