Which is darker, the Gray sky or the yellow window? Keep in mind that surrounding a color with a much darker one is likely to have an impact.
The dark "Frames" are much darker than anything else in the picture. Do you think you can afford to lighten them a little so they don't behave like flat black holes? When I look at the sliding door on the left of the big opening I can see some boards holding it together. To me, they make that dark shape more interesting than flat black would. The door would still be a lot darker than than the yard or the sky.
Take a minute to see where the darks and lights appear in this photo, below.The fir trees are dark when they are framing light areas, and light where they are framing the darks. I could pretend these bold value relationships were revealed on site, but the truth is I didn't notice them until I was reviewing the pictures. If you choose to paint this scene remember the questions that will make the light clear and bright; How dark is the shape I'm about to paint? Compared to what?
For example, the trees on the hillside are darker than the grass, but lighter than the shadows.
The image below has much in common with the previous one. Layer number one is a carefree treatment of the light trees, rocks and shadows, onto which the more specific darks can be laid.
Choose one or two of these and practice getting the values correct so that you can let go of accuracy in the realm of color. Have fun!