Hello and welcome!
Like you, I'm new to cosplay - though I've been to my home con (SakuraCon) a few times. So far, the people here have all been super nice and quite helpful. Can't wait to see what you come up with for your demon hunter!
The Legend of Zelda: Twilight Princess - Midna (True Form)
World of Warcraft: Lady Sylvanas Windrunner & Ysera: Queen of the Emerald Dragonflight
Black Butler: Grell Sutcliff
Soul Calibur 5: Viola & Tira
Death Note: Ryuk or Rem