I hope everyone will be fine. Thanks to Community Team for organizing such a creative art contest. That is exactly what I waiting for.
Here is my Oil Pastel colorwork of natural scenery

Pastel Color setup

As Mentioned in the Contest post that Oil pastel colors will be preferred. So I am using "TiTi" Brand il pastel colors. these colors are difficult to use because they do have not any proper shape like a pencil. unlike liquid colors, managing shade contrast is too much difficult.

huawie Mobile default wallpaper

Tools

1. Plain paper
2. Lead Pencil
3. Razor
4. Oil Pastel Colors
5. ruler scale
6. paper tape

Working steps
painting of natural scenery with pastel color. was a unique idea for me because I am expert in sketches and human Paintings. that's was a challenge for me to work on different scenery with a completely unknown color setup. After a long struggle did it

here is the first step to creating a mountain. Oil pastel colors are not lines friendly. i used plastic tape to control excess lines on the boundary

Now the next I did a shade of blue sky. I used oil pastel color with some water to show proper effect then I used Burshs to control the color noise

The step is soothing colors. is used tissue paper and cotton ear stick for this. After Removing the tape here is the view.

Now time to create mountains. I used mixed colors here. Also used some colored pencils in this step. combine black and white colors together i got the mountain shade

Working more with pastel colors I added a more vibrant texture. These hills have difficult color combinations. Because this is not a conceptual drawing so I have to copy the source at any cost

Now finally the hills are properly colored here is the view

Now it's time to draw land below the mountain. I used mixed colors to create proper texture. all these coloring don't with oil pastel colors

Finally, the coloring is completed. here is the view

After Controlling noise properly here is the final view. I used tissue papers, and ear sticks to control color contrast