This is a really nice demo of SVG in firefox browsers. Basically you can grab the corners of a photo and rotate and resize it. Better than my description ... honestly.
RT @donalscannell: The simplest DIY mask yet - all you is a sock and a scissors https://t.co/xYU0ZjHsSV
The simplest DIY mask yet - all you is a sock and a scissors pic.twitter.com/xYU0ZjHsSV — donal scannell (@donalscannell) May 11, 2020 from Twitter https://twitter.com/danbrewer