Open your lens as wide as it goes (f/2.8 or lower is ideal) to let in every bit of faint starlight.
Add a light "mist" or "fog" layer at the bottom of the image to blend the nature elements into the sky.
If you are designing this digitally (at that 1366x768 resolution), post-processing is where the magic happens.
This is a 16:9 ratio. Ensure your focal points aren't too close to the edges, as different OS taskbars might cut them off.
Save as a high-quality PNG to avoid the "color banding" (pixelated lines in gradients) that often happens with JPEGs in dark, moody images. 5. Curating the "Vibe"