For discussion purposes, I juxtaposed your painting with a Kincaid of similar theme to point out some key elements:
Here are my observations:
First, it appears you painted this from your imagination, and not from an actual reference. Note that your house is below that level of the river, there is no road leading up to the bridge, the trees look like a pickett fence, there are no reflections in the water and the mountain in the background has an almost impossible shape.. This is because your imagination does not represent reality. Kincaid's painting is undoubtedly mostly from his imagination, but he has significant experience.
The key elements that you need to become aware of are:
1. Atmospheric perspective. Note how colors fade out as object recede in the background.
2. Value ranges. Note in the Kincaid the values range from 1 to 5, while your painting is almost all mid-range value.'
3. Use of colors. Look at the range of colors in the Kincaid. Your painting is almost entirely green and blue.
The best thing you can do is paint your next painting from a good reference and paint exactly what you see. Once you are accomplished enough to paint what you see with reasonable accuracy, then you can start to work on style.