U will need:

* Any wings

* the portal gun

*Bundle of balloons/cloud in a bottle/ anything that gives an extra jump

*A 1 block thick wall

* And a high place to jump off.

get on top of high jumping place, and make a smooth surface on the side the high place that the wall will be. Make a portal on that smooth surface. then, go abut 900 blocks away from the portal and build up a wall. The height can vary. Then, at the bottom of the high place, make another portal. Then, jump off the high place ad land on the portal, then u should come out the oher portal and launch sideways at a high speed. When that happens, just move into that direction and run into the wall, and u should go through it.

I hope this guide was usefull. This may be patched soon. So enjoy while u can!