You generally end everything with 66P+K~P+K~P+K. Kokoro midscreen juggles (for light characters) are essentially, "What can I do and still land 66P+K~P+K~P+K?" For lightweights, you can do CB 4P+K K 66P+K~P+K~P+K. Check the juggle section in Bushido's guide.
EDIT: And by light, I mean...