Once you are done with the First Time Top-up, you can now use your wings once equipped. Press "F" to start flying. But to get better stats, follow the steps below:
1) Upgrade Wings: With the right Feather Essence, you can upgrade wings in the Xuanyuan Forge. Upgrading will increase the wings Stats too. You can obtain Feather Essences at The Skygate instance.
2) Change Wings: You can synthesize Wing of Light into Wing Flurry at the Xuanyuan Forge or Wing Flurry into Lunar Wings.
Synthesizing Formula: Wing Flurry = Wing of Light + Superior Rare Feather* 5 + The Flying Essence* 50
Superior Rare Feather: Obtainable at Land of Creation.
The Flying Essence: Obtainable at The Skygate instance.