Test your Calling Card before you build it.
Two checks: can people read your name on a phone, and is your credit line complete?
Pick your colors · type your name · watch the verdict
That little square is roughly how big your card is in a feed. If you have to squint here, so will everyone else.
The rule of thumb: the contrast should be at least 4.5 to 1 for small text like your credit line, and at least 3 to 1 for a big name. Script fonts need more size than you think.
Fill it in · copy it · paste it on your card