Name: Riversplash (AU)
Description: Blue-gray tabby with azure eyes, oh and white paws.
Personality: A slightly shy, observant, cat, but is a strong opponent in battle, and is willing to sacrifice his life to protect his or the rest of the clans.
Age: 20 moons
Rank: Young Warrior
History: (I’m giving you the history before the plot of the story) Born to two well respected warriors along with his sister Lilykit.
As a apprentice, he was skittish and nervous, scared that one wrong move, and the leader and deputy will be angry at him (The deputy, Shadowheart, was his aunt). His mentor, Forestclaw was kind and encouraging, and is Riverpaw’s supporter even after he became a warrior.
Family: Stormclaw (father, insecure, extremely loyal, secretive), Rabbitmist (mother, fierce, overprotective, hot-headed), Lilyflame (sister, enthusiastic, naive, sensitive), Shadowheart
(Aunt, Calm, overprotective, loyal) Thundersky (uncle, smart, brave, crabby)
Likes: Mice, Swimming (Other cats thinks he’s weird), gatherings
Dislikes: The rain, small spaces (the warriors den included), letting other people down
Part in the book: Main Character

1. Tigerclaw was originally going to be named Hammerclaw.
2. The three kits of Ferncloud that died before the journey to the lake were Larchkit, Hollykit, and Shrewpaw.
3. Their warrior names were Talltail, Onewhisker, Bluefur, Leopardfur, Blackfoot, and Raggedpelt.

Trivia: Hammerclaw, Larchkit Hollykit and Shrewpaw, Talltail, Onewhisker, Bluefur, Leopardfur, Blackfoot, Raggedfur. WOOH.
Good work fixing that up! Someday I'd like to try a fanfiction where I take a common Mary-Sue, name them something silly but not ridiculous, like Snowflakeheart, and then use traits like being great at hunting and fighting and being beautiful, and then try to write an actually interesting fanfiction about them.

Trivia: Tadpole, Scourge is his half-brother, Rusty and Smudge. Peasy!

Perhaps one thing I would point out that I've seen a lot, is that having a cat be in a prophecy doesn't make them a Mary-Sue.
Is Jayfeather a Gary-Stu? Is Brambleclaw? What about Feathertail or Crowfeather?
Also, powers don't either. Definitely, either of those things can be easily messed up, resulting in an abomination that should never see the light of day, but even both don't make it for certain.
Prophecies are often the main driving points of the story, and it would then make sense that any cat specifically mentioned in the latter to be the/a main character.
Well, enough negativity, good job! I agree with a lot of this.

Great work so far, I think there's a lot that could help out people!
I personally have described eyes with a purplish tint or grayish tint, but that's as far as I've gone. A note on names: One of my favourite tricks for having an unusual name (Ex: Scarlet) is to simply have them be a rogue and then become a Clan cat, hence Scarletpaw.
Also. You don't need to have an AU for cats to have the Clan names as suffixes. Prefixes, yes(with the exception of Windflight, I think she was a mistake[Same book with Moonflower]) but suffixes, no. See Scorchwind and Runningwind. I'm pretty sure there was a cat with the suffix -shadow as well, but I'm not sure on that one.
Anyways, you've done a fantastic job so far :D. (Are you saying I'm evil?! or am I... mWAHAHAHA)

Tigerclaw was going to be Hammerclaw (I think)
Hollykit, Larchkit and Birchkit/paw/fall
Talltail, Onewhisker, Bluefur, Leopardfur, Blackfoot and Raggedpelt

I find this quite informative and interesting. I would love it if you could make a guide for characters, particularly those that are skilful, intelligent or very nice. Can't wait for the next one!

Hammerclaw,
Shrewpaw, Hollykit, Larchkit
Talltail, Onewhisker, Bluefur, Leopardfur, Blackfoot, Raggedpelt

1. Tadpole
2. Scourge
3. Rusty and Smudge

1. Hammerclaw
2. Larchkit, Hollykit, Shrewpaw
3. Talltail, Onewhisker, Bluefur, Leopardfur, Blackfoot, Raggedpelt.

I'm afraid you have a small piece of information incorrect again. "Sun" is in fact, is a proper prefix. The sun is not at all sacred to the cats- when have they ever worshiped the sun like they do the stars and the moon? Also, in Bluestar's Prophecy, Sunstar/fall obviously has the prefix "sun", as do a few other cats. This is also not a mistake like Moonflower's name was, because the Erin Hunters never stated it to be so.
Your guide overall is a bit confusing, but it is still very useful! You did a very good job!

Actually, cats can have grey eyes. According to "MessyBeast, Cat Eye Colours", "The type of dilution found in cats is blue dilution which turns black into grey." This simple piece of evidence states the fact that the melanocytes, a type of pigment-producing cell, can dilute from a dark shade of a simple colour into grey. I have also SEEN cats with grey eyes, so I know for a fact your statement is incorrect.

*Hammerclaw
*Hollykit (she-kit), Larchkit (she-kit), Shrewpaw (tom)
*Talltail, Onewhisker, Bluefur, Leopardfur, Blackfoot, and Raggedpelt

Hammerclaw

Larchkit. Not all of my last review appeared

,Hollykit,Shrewpaw

,Onewhisker,Bluefur,Leopardfur,Blackfoot,and Raggedpelt

Willowfang actually seems likable! Great guide! I also like the trivia