Practice, practice, practice. Make time every day to do something creative.
For me, with graphic design, early on I would find a poster or magazine ad I liked and then try to create something of the same style. I still make time to watch YouTube videos to learn new techniques and then go practice those techniques before I forget about them.
With photography, I have been interested in it since I was in high school. I read books off and on through the years but never really grasped some of the fundamentals. Like with graphic design, I find I learn the most when I read/watch a video about a technique and then immediately go out and practice.
One of the most creative parts of photography is finding the shots no one else sees. Towards that goal, starting last August, I have challenged myself to post at least one unique photo on Facebook each day. About once a month, that’s something from my archives. The rest of the time, it’s a photo I took that day. That has really forced me to look at everything I see differently.
And I’m with you on not being much with a pen, pencil, or brush. But, there again, I occasionally try to push myself once in a while. My current best selling t-shirt includes “primitive” drawings of ducks and a moose that I drew using a 1940s book on how to draw wildlife.
Keep us posted on how your artsy side develops.