Follow the steps here.
If you encountered the problem that the downloaded
Install High Sierra file only has 19MB.
Then, check your OSX version and App Store version.
For me, I need to update to El Capitan 10.11.6 and update App Store to download the full file (after deleting the 19MB file, and re-download).
If you’re downloading macOS High Sierra, use a Mac with High Sierra, Sierra 10.12.5 or later, or El Capitan 10.11.6. – How to create a bootable installer for macOS
Keep following the link, and finally change the screen resolutions using this.
For me, I changed it to 1920x1080.