M0ira you're more than a doodler!
As other's have said join a small art group, or classes, you'll enjoy it.
Or why not retake your O-Level?
I took A-Level Art when I was in my 40s (I wasn't allowed to take O or A at school, long story), I was the oldest in the class and got the highest marks throughout the course. I only did it to prove to myself that I could.
Strangely enough I very rarely draw or paint now, sewing has taken over, but I always carry a small sketch book and pencils with me. I have loads of little books of quick sketches that I intended to use at some point. Someday perhaps.....