5E, Save the Dragon From the Princess!

I recently created a new game based on the old Council of Wyrms campaign setting. Rather than playing dragons, players are their Half-Dragon Scions, tasked with saving a young dragon from the princess of a far away empire.

I'm new to this site and will probably require a little help getting things going right, but here is a link to the game along with a link to the homebrew material I created for it.
Half-Dragon Templates
Game Link

Hi Crixus. I applied to play if that's possible.

Applied, though that link won't let me access the templates.

Hi, Crixus!

I don't know why you invited me to your game but I'm glad because it sounds awesome! I haven't been able to access your Half-Dragon Templates document yet but right off the bat I'm imagining a Gold Scion Mystic. 

And I've been around the site for a little while so if you ever need any help with any of it I'd be more than happy to help! :-)

Do the half-dragons who have natural attacks have any weapon proficiency? Or only natural attacks?