get a spray bottle, fill it with water, put about 10 or less drops of detergent in it, spray on bonnet, slide decals into place, squeeze bubbles out with squeegee type thing.
and if you're me, curse at the one hair that got caught under one of the stripes.
don't be afraid to use lots of detergent mix. spray it on the bonnet, spray it on the stripes, and keep it all as wet as possible until the stripes are in position, then squeeze it all out.