Basic design parameters. Better yet, pick a circuit you like and copy it. Then you can increase gain by altering the cathode resistor, adding or changing the value of the bypass cap or increasing the plate load resistor. Each change brings with it a change of tone, not just gain. Paper amps have no tone. Start with something, like a 1959 and then experiment.
"Understeer is hitting the wall with the front of your car. Oversteer is hitting it with the rear." --"Fireball" Roberts