The Final Handed In Pattern

Base Form:
    Squared-diamond, fitted within canvas.
    Rotate 45 degrees, fit in initial geometry via scaling down
    Repeat by scaling initial two geometries down 50%

Repetition of final form:
    Rotate 5 degrees about centre
    Rotate 17.5 degrees about centre
    Stop after four iterations

Fill: alternate black and white through inversion
    Essentially, each additional iteration redefines the fill of the pattern by inverting whatever the fill was beneath it.

Alternating the pattern: Rotate by varying levels and iteration count.