9. Stay in this key-frame and mark all mcs. In Properties set the Color: Alpha back to 100.
10. Do a move-tween in all layers by clicking a random frame before the 15th, marking all layers again and then clicking Move-Tween under Properties. (Picture)
11. To habe each letter animated seperately select one layer (and all frames) and just drag this 5 frames further and direct every layer to the frame with the last keyframe. (Picture)