Straight hair isn't a one-size-fits-all affair. Type locks tend to have fuller strands with a slight bend at the ends, but no real curl. To give this type volume and texture, use dry texturizing spray at the roots before styling with a flatiron.
Princess Leia rocks David Bowie's iconic lightning bolt face paint from the album Aladdin Sane. Artist Leka also takes the "Rebel Rebel" single cover and gives it a Star Wars twist. I've included the original art pieces for reference.