Camera practice
Practise fingerspelling with your camera. Handful looks at where your fingers are and tells you what to fix, like a practice partner. It can't judge signing the way a Deaf teacher can, so use it to practise, not as a grade.
Pick a letter
Checked on real signers Checked on a public set of real hands Not checked on real hands yet Tricky: the camera can't be sure
Make the letter A
Fist with the thumb resting against the side.
Check your hand with the camera
Your video stays on this device. Nothing is recorded or sent anywhere.
The fist letters are close cousins. The camera tells them apart by where your thumb sits, and in testing on real hands it picked the right one about 9 times in 10. M and N are the easiest to mix up, so compare with the drawing too.