To create a tester contact sheet the first stage is to set the enlarger to a size so that a small piece of paper will fit .Once you have done that place your negatives on the paper set the timer to 2 seconds.You then find a piece of cardboard to cover all the negatives except the first one of each strip.After the 2 seconds is up uncover a few more negatives.Do this until all of the strip is uncovered.
Abbies photography 