Find a kiss image you like and trace it.  If it is two separate parts you can add some little rectangles between the two layers and use Combine to join them.

I usually use holes that are 1-1.5mm wide, this will depend on how big your jump rings are.

Each earring needs just 1 hole.  For the necklace one of them needs 2 holes and one will need only 1.

Place the holes where you want them and use subtract to remove them from the kiss.

I cut these from red xTool acrylic using the default settings and then weeded out the little parts.

Then I washed them with a little Dawn to clean them up and added jump rings to connect everything.

I wore these to a women's event and got so many compliments!  They are very fun to make and they make a cool statement.