Rick, the follow presumes that you have assembled the plane and that wings are fully attached...and I'm also presuming that you have available an incidence meter and a small, but accurate spirit level. Do the follwing: chock the main wheels and jack up the tail wheel with books, etc. until the small level, placed on the horizontal stabilizer, reads level. Attach the incidence meter to the lower wing inboard of the aileron. The meter should show 0 degrees or, a maximum of 1/2 degree plus or minus. Place some masking tape on the inboard edge of the aileron so that the two trailing edges align. Withoutdisturbing the alignment, check incidence again but near the wingtip. The reading should be the same as the first measurement. Repeat on the other lower wing. Repeat again for the upper wing. If all the readings are zero degrees plus or minus one-half degree, you're okay. Many biplanes call for zero on the stabilizer, zero on the lower and minus 1 or 2 degrees on the upper. This is usually required with flat-bottomed wings to reduce the high-lift wings tendancy to climb when power is applied.
Happy flying! Jerry