In order to draw your character just the way you want it, I need to know every detail about your character's appearance! Never ever worry about sending me too much information. I'd much rather know too much than too little. If you're having trouble thinking of where to start, here's a little questionnaire for you. Just fill it out and send it to me in an email, and I will be the happiest person ever. This is especially important if I am drawing you a reference sheet! I know some of these questions won't apply to all characters. Just fill out what applies to yours.
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Height (if quadrupedal, from the ground to the top of the shoulder):
Length (nose to tail):
Wingspan:
Build (muscular, lean, heavy, etc.):
Habitat:
Temperament/personality:
Body covering (fur, scales, hide, etc.):
Body color:
Wing color:
Any special markings?
Overall head shape:
Any horns/spikes/sails/hair? If so, please describe:
Eye color:
Pupil shape:
Does the mouth have a beak or lips, or something else?
Color of inside of mouth:
Shape of tongue:
Teeth? If yes, any special arrangement?
Wing shape (pointed, rounded, etc):
Wing thumb?
How many wing fingers/digits?
Claws on wing fingers/thumbs? If yes, what color?
Anything else to add about wings?
Front legs: hands or paws? How many toes? Dewclaw/thumb?
Back legs: how many toes? Dewclaw?
Claw color?
Anything else?
Any sort of spinal ridges, spikes, or manes? If yes, where on the body do they start and end?
Is there anything attached to the tail tip?
Does this character have any special accessories (jewelry, armor, etc)?
Is there anything else I should know?
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I also ADORE reference pictures! It's okay if you don't have any specifically accurate pictures. Just send what you have with notes like "everything is good except the tail, which should be longer" or "the face in this picture is perfect, but the color is all wrong." You can even reference any other picture this way, even if it's not your character, or if it's a photograph. You can send me a picture of a car and tell me to use the color and I will. The most important thing is to communicate your idea clearly!