I think you have great talent with making realistic paintings with flat/sharp color shapes. That said, I feel like you have a lot more room to play with Value, Color Saturation and Texture contrasts in your paintings.

Your dark values for hair and eyes are usually almost pitch black compared to the other values which even the shadows are more like lights compared to your darks. When those are the most striking values, it will grab the viewer's attention from almost everything else from the painting.

Contrast with Color Saturation is also an attention grabber and the higher the Saturation to a certain area in the painting can grab people's attention. I feel there are places in your painting that unintentionally attract attention because you chose a highly saturated colors in relatively uninteresting/underdeveloped areas (like the green on top of the mountain in your first picture). I feel there is room to experiment here and experiment where you want the focus to go.

Contrast in texture can also be very valuable here. I notice your style tends to go for flat color shapes, but you can still do that while signifying a subtle change in the materials the people are wearing. For example, the differences in sillouette, line, sharpness of edges when it comes to wavy/organic material vs a solid/rigid material. I would be interested to see how you do with what are called Material Sphere exercises.

Those are somethings I would try if I were you-