[@Tergonaut]
Won't give a full feedback until you finish, mostly cause decisions change and ideas evolve over time, but I can offer some guidance

Skills are meant to be details about the character's proficiencies or abilities that may help them. Clark Kent's powers (Semblance) would be flight and laser vision while as Superman, but his skills would be that he's a skilled reporter so he knows the latest news, or he has a skill for blending in with the use of a different hairstyle and glasses. They are something that sets your character apart, but are not necessarily used to define your character.

There will be water and weather variations within the roleplay. If you have a look at my character she is impacted by sunlight so I can use her to indicate and reference the changing environment around her. Aquatic Respiration does feel like something that wouldn't really fit into the theme or style of RWBY as that is more of a mutant style of ability. As alternate ideas, she might be able to walk across water or utilise 3D space while it's raining, ie: bound up rain as if they were stairs.

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[center][url=https://www.roleplayerguild.com/topics/163391-valour-vale-a-rwby-roleplay/ooc][h3]OOC is up![/h3][/url][/center]

Please remember that I will only hold a maximum of 5 players, including the GM. I will also take time to review the characters that are submitted so I can get an understanding for the balance, while also making it fair for those who may be stuck in different timezones or busy outside the forum. Best of luck to all.