How lucky you are that Dallas loves you so much, even if you don't have the photographic evidence to support that!
There are several keys to taking good photos of cats. The first is to devote a block of time to it. They will rarely just sit and pose!
I'll usually have a bunch of toys, especially a "teaser toy"...anything to get their attention.
Use natural light! Take their picture in the brightest room in the house. Natural light gives a far superior picture quality.
Get down on their level! Lay or sit on the floor. Yes, your baby will headbutt you, but that's when you start tossing out the toys you brought with you, or getting them to play with the teaser toy. I'll usually get them involved in something, point the camera at them, and then make an unusual sound, like click my tongue, whistle, something. When they turn around...
...you've got him! Pictures taken from a low (floor level) point of view are much better than those taken from above the cat's level.
Most importantly, take tons of pictures! I'll take dozens of pictures to get one or two that I think are great.
Lastly, you absolutely must
post your best efforts over in Fur Pics so we can see you beautiful boy Dallas!
Welcome to TCS, and I can't wait to see pictures of your boy!
If you have any other questions about the site, feel free to click on my username and send me a private message.
We hope to see more of you and your babies around the site!