Dennis,
It looks like you are working pretty steadily. I hope you are enjoying yourself. That's important.
Now a critique. I'd call most of your work, "primitive." I know artists who do very well working in a primitive style Sally Caldwell Fisher, Grandma Moses, etc. I'm going to guess you are working from photographs primarily. I do much the same because I have little time to get out and work from life which I find preferable much of the time. If you are able to work from life, I'd do so for the experience and education. Your eyes see far more than any photo is able and it can be a bit of a crutch If you have never worked from life. Get a mirror and do some self portraits for practice if you have no other way. Draw, draw, draw. I'd do at least ten a day, some short time sketches 1 to 5 minutes to warm up and then maybe some longer times. Think about shadows, where is the light is coming from? Think about how different compositions makes you look at different parts of the picture. The composition is very important to making your images more interesting or dynamic. Color can be used to make things seem far away and help create depth, make things have volume (roundness), make things vibrate with contrasting colors. Perspective in your drawing will also help create more depth. In figure work you need to learn more about anatomy or learn to see more accurately.
These are general guidelines, rules. All these rules can be broken. I think it best to know you are breaking rules before you do.
I say all of these things because I see room for improvement in them all if you are trying to paint realistically (I prefer the word representational). Your alternative is to continue as you are working in a more simplistic style, primitively and not learn any of these rules for doing something different. There is no right or wrong way to go. You decide. Most of all enjoy and continue the journey. It's the most difficult thing and most enjoyable thing I know. It's your journey. YOU are steering the ship.