Read the portal requirement
Confirm exact dimensions, background, file type, size limit and whether the portal accepts colour or grayscale.
Use even lighting
Keep the subject centred, background plain and image sharp. Avoid filters and heavy retouching.
Crop carefully
Use a crop tool to meet the required aspect ratio, then resize to the exact pixels if specified.
Check the final file
Verify the file size, dimensions, file type and face/signature visibility before uploading to the official portal.
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