Knowing my intrigue with dragons, one of my 13 year old sons (and aspiring artist) gave me a little hand in my visual inspirations for my Dragon Riders series. Below are the two that he's drawn for me so far.
Just a little note, he drew these freehand, from his mind. He makes me proud and hopes he continues in this skill that I wish I had. :)

Jax from Bonded Hearts

Bane from Reluctant Hearts

Dargo (Bane's son) from Reluctant Hearts

 Dac from the 3rd Dragon Riders book (title pending)