I need a pixel artist for sprites, backgrounds and UI

Design details: Hello,
I am working on a 2D mobile game. What I am looking for is a pixel artist who would make the sprites needed for the game. I am a starting developer and cannot offer substantial immediate remuneration. I am looking for somebody who also would be just starting his or her career and would mainly like to take part in a project or wouldn't mind getting payed after the project brings profit. The game will be free to download, but will contain micro transactions. The theme of the game is fantasy, the sprites should be 64x64. What I would require:
1. Sprites for the main hero, who is a wizard, enough to make the following animations: Attacking, Jumping, Getting hit, Dying
2. Sprites for the enemies, who are all elementals connected with the following elements: Fire, Water, Wind, Earth, Thunder, Steam, Mud, Sand, Magma, Ice. Every elemental should be clearly distinguishable from others, by means of color or form, and each should have the following animations: Walking, Jumping, Dying.
2. Also sprites for flying versions of elementals. Flying elementals require only Flying (moving) and Dying animations.
3. A few backgrounds for the game, set in castles, dungeons, forests, ruins or other fantasy related places.
4. Sprites for projectiles for each elements, such as fireballs, earthballs, etc.

During the development there may come up the need for some more sprites. I would like to find someone for a longer collaboration to work together on this project and maybe future projects. I will gladly give more information about the game through private messages.
Ideas for the visual style: Pixel art
Extra notes: