[Reader-users] using the practicing sheet

[John Heilbrunn]

Hi.
thought I wanted to improve my aimning skills and got the training sheet out for some updating.
Sometimes I got a perfect advice, but when I - according to the indications) lowere the camera, at 10 inches with 2 inches, I got "not enough indicators" or something like that.
When i heard tha one should be a foot away, 16 inches, and get advice to lower the camera to 8 inches, it makes me wonder about the right positioning, especially when using the authorized and unambiguous training card.
Do any of you have experience with the training card? Did you use it a lot to get your aiming skills up to par=?
John