If another effect modifies which or how many tokens you create, you choose the order to apply those effects. For example, if you control this creature and Anointed Procession (“If an effect would create one or more tokens under your control, it creates twice that many of those tokens instead.”), each time you create tokens, you can choose to apply Anointed Procession’s effect to double those tokens first, then apply this creature’s effect to create an additional Thopter token. Or you can choose to apply this creature’s effect first followed by Anointed Procession’s effect, allowing you to create double the original tokens plus two additional Thopter tokens.