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Well you will see the ender dragon egg. You can collect it. Then you need to go under the egg there will be an end portal. Go through it and it will take you to the credits. The credits are pointless. I'm not sure if you can skip them. After the credits the game will take you back to the over world.
The only way you skip the credits is to set it on the floor and skip over it.
You can't skip the credits but you can speed them up by holding the B button however after your hall of fame is showed your game will save you can turn the game off and completely skip the credits that way.
Turn the game off then on.