Before designing, ensure your source photo meets these universal rules: Plain white or off-white. Expression: Neutral face or "natural" smile.
Surprisingly, GitHub has repositories for "Passport photo templates." These are often .psd or .ai files. Search for "passport photo grid template." 8 passport size photo psd file download free
US_Passport_2x2_8copies_300dpi.psd
Leave a small 0.1-inch gap between photos for easy cutting. Before designing, ensure your source photo meets these
(typically 35x45 mm or 1.5x2 inches) on a single sheet of photo paper. Free PSD Templates & Tools 8 passport size photo psd file download free