Greetings! Hmm, I had a quick look over the trailer: It is hard to summarize the entire game in less than 120 seconds. And it's "okay" for a trailer, but super nice for your "first" trailer - if you know what I mean ^-^
I would suggest you also include some visual context to the breadth of the game - cuz this was the surprising aspect for me. Yes, I came for the artwork and the overall flair (pun intended XP), but I stayed for the story and the gameplay depth.
On to constructive feedback: I would absolutely include a short section where we see the 13+ side-quests, for example Mila entering the Hallway and picking one of the first Quests. I would also mention the included guide (which is a frakkin' 100+ pages long EPIC and is absolutely essential if you're low on time and just want to see stuff... erm... pictures *fumbles with imaginary tie*).
And you should also show the first vampire story chapter logo - as some mysterious hint that there are TWO campaigns, it's visual "proof" you know - and it intrigues.
Lastly, we never really see the actual game. Battle-sequences, yes, dialog, sure - but not really what players will be doing arguably 50% of their time. This doesn't vibe with me personally, cuz this was my primary surprise when I first saw CV. Maybe include (short, precise) footage of what happens when the player equips one of the cursed garnets? Reveal a bit more in the trailer, it's not counter-productive in my opinion.
Granted - it is, on first glance, like any other RPGM game out there. But fairly quickly into the game you realize this ain't the case here, it's not representative of what you actually achieved: Rewiring my brain to associate all RPGM sounds, fx, sprites and tiles with Crimson Veil - and not some soulless run-of-the-mill game. Just because CV gives them meaning, makes them worthwhile. You created so many atmospheric scenes, like the forest maps (which come to mind), where everything comes together - try to incorporate some actual gameplay footage into this and proudly call it a real game with substance. This is not just a titty show, even for the superficial players.
Another possible avenue you could explore, if you are willing to depart a bit from the vanilla trailer format, would be a character/story highlight trailer of sorts. Less is more here, because I still think you get players on steam more with substance and gameplay than JUST your portraits and YOUR hard work, y'know? You could just set up a premise, show some story aspects, maybe even introduce mystery characters (like Ashe) or focus on "we are Noctorna HQ" - character shots - "this is the legacy of this and that character - Will you be able to resist Milas dark desire?" ... something along those lines. Ok, maybe not that specific line ^-^ but this is what would be a more "complete" trailer in my book.
Last thing - I'm not bashing on your work! I love the game, haven't bought it yet (I know I know...), but I truly think CV is different than so many games in this genre. It CAN stand on its own - it has content far deeper than most games. Cuz this Is not just a gallery game, it actually requires you to play and have some fun, evoking a (literal) Link to the Past for many =)
Thx for coming to my TED talk. Have a great week & Bis demnächst ^-^'