At the moment, the fairy-like Elementals (the ones who appeared to have cognizance, as opposed to sprites) have only been seen in the Black Shroud since the Calamity, and very, vary rarely. Before the Calamity, however, they were sighted across the realm, at times. As far as we know, the Padjal, however, exist only due to the Pact of Gelmorra, made between the proto-Gridanians and the elemental spirits of the Twelveswood. Those forced to live underground after the Sixth Umbral Era (Water) developed the use of conjury to communicate with the Elementals and beseech their forgiveness and permission to once again dwell above the surface. As part of this accord, the Elementals began to make Padjal to act as their intermediaries and the inheritors of white magic. They can bend that last part and give non-padjali-non-Gridanians white magic, but Padjali chosen by the wood are forbidden to use their powers in conflict, and the Elementals outside the wood aren't part of the accord by which Padjal are made.
You'd need to find an Elemental and find convince it to take you seriously while you say, "You know the Pact of Gelmorra? I want to look like that. I don't want to be forced to stay in one place or be forbidden to take place in combat, and what contact we have and whether I'm your intermediary is kind of negotiable, but I just want to look like that." What's a reason that the Elementals outside the Shroud would agree to make you an imposter of their neighbors chosen?
I'm sure it'd be possible to warp the world that hard, but the chances are, at the moment, kind of slim that SE would acquiesce to that request.
