Pro tips for photographing physical artworks:

— for twitter / X:
• use daylight (shoot outside) or daylight balanced bulbs
• use a tripod & an easel or stand for the work
• don't use a wide angle
• bracket your exposures
• then, in Photoshop: 
-- use the perspective crop tool to crop to 4 corners
-- use curves to adjust contrast

— for making digital artworks from them:
• all of the above, then:
-- use unsharp mask to slightly sharpen
-- convert to index mode and back to RGB using minimum number of colors acceptable — this reduces colors for pixel-perfect sharpness
• raw material done ✅ now make what you want of it with apps, code, etc.

Avoid:
❌ shooting indoors except with daylight bulbs
- why daylight bulbs? bc tungsten / warm light is a pain & daylight works seamlessly with daylight from windows & ambient light
❌ using an iphone
❌ shooting with crappy lights
❌ unintentional backgrounds

Remember, you're making an impression — don't be sloppy with the presentation