Super Mario Bros. 2 Warp Glitches

I wonder why this glitch isn't here...maybe isn't well known (or maybe I didn't see it D: )
Still, not my glitch - credits to David Wonn's (maybe defuncted?) glitch page: http://davidwonn.kontek.net

This glitch compilation show many warp glitches, aside normal ones

1° video: On 6-1 take the first potion and drop it on the second one, then do the "illusion item" glitch (enter subspace, leave, and when entering the door, smash repeteadly B). If succeed, it will see as if you have the potion above your head, but you actually will have none. Go to the next room, and the potion will materialize. So enter subspace and enter any vase that you couldn't go on normal world.

2° and 3°: On 1-2. This one is tricky, but it's still possible to do. Grab a stopwatch (grab the big vegetables, the 5th that you grab will be a stopwatch), and grab an enemy that don't jump (the shy guy or the left snifit are perfect). Around the 15th-16th tick throw it below the ladder. If succeed, the enemy will be stuck under it. Then keep jumping until you see that you are over the enemy (you will notice that your feet are slightly below ground). If so, grab the enemy and throw it. You now will be stuck on the floor. Press down and voila!. First attempt failed =( I got stuck. But after appearing, if you keep pressing up, you can move to the right side and get off the wall.

4°: Repeat the same as above on world 1-1 but do it on the first vine with any shy guy. Although David Wonn's page said that I should appear at world 1-2, I did it in another place D:

5°: On 3-1. Again, the same as above, but over the concrete ground, where a shy guy and a moving panser are. Get the stopwatch and throw the shyguy below the ladder, this time around 14th and 15th tick, and from the very right, where you can see just a little bit of the ladder. That will take you to....surprise!

Enjoy!