Capcom is holding a weapon design contest for Monster Hunter World: Iceborne, the game’s first major expansion. The contest is currently open for submission and runs until February 6, 2019.
Apart from Hunter Weapons, this time Capcom are also asking for Palico Weapon & Armor designs. You can read the official contest rules here.
Check out some sample designs by the development team:
Hunter weapon designs
Palico weapon designs
Palico armor designs
Finally, a template for the Palico has been provided by Capcom:
Monster Hunter: World is available for PlayStation 4, Xbox One, and PC. The design contest runs until February 6, 2019. The Iceborne expansion will arrive in Autumn 2019.