The more descriptive you are in your prompts, the better the end result: Gender, age, eye color, hair color, hairstyle, gear color, armor color, light to heavy build, position of the character, the setting of the scene. It can do dragons, but describe what the dragon looks like. The default is a Httyd style, but it can go more realistic if prompted. I separate the prompts with commas, but anything will work. Some times will have some unexpected results which sometimes will be "happy accidents". Typically I keep it at a square resolution with 80 steps, but it can do any ratio for the resolution. For the negative prompt, I use the "commonly-used" and press "people" first and then "general". If your character keeps having horns or their eyes are crossed then add in the negative prompt to the top of the list: horns, cross-eyed. The horns will almost all be gone, but the cross-eyed can still happen on occasion.