If you want to get the Fuel Wings Stamp you need to land on a fuel can while your falling. So you have to try and full until your fuel gets low and land on the fuel can. If you're confused you can see below how it's done. Hope it helps. Good Luck!
I hope this video helps you get the Fuel Wings Stamp. It's a really easy stamp to get and non members and members can get it! Good Luck!