Ooo, that's a very lovely design the griffon has there. You said you found that picture, correct? If the design isn't yours, I'd wait on making the preset and ask the person who made it for permission. That griffon can very well be their character and as much fun as it seems to turn its design into a preset, it would probably be best to ask if it's alright. Though if I'm misunderstanding something, please do correct me.
Warriorstrike before me provided a lot of links to helpful tutorials. There's many others out there as well, and so I wish you luck in finding the help you need, and good luck on your preset. I know you'll do just wonderfully.