✦ Option 1: Click on the image to open it full-size, then right-click and choose "Save Image As" from the menu to save the file locally.
✦ Option 2: If you've upscaled your image, it will be available on the Midjourney website at midjourney.com/app. Simply log in using your Discord login info to access a complete gallery of your jobs and prompts. Your newly created image will appear near the top of the gallery. Select the image and click on the save icon to download the file locally.
✦ Option 3: You can also send the image directly to your Discord DMs by reacting with the envelope emoji. This option can be particularly helpful if you want to share your image with others or use it in a different project.