...well, pretty straightforward, isn't it? It's Jessie and James and they're smooching to their hearts' content. Of course, looks like Jessie is getting a bit eager if you know what I mean, but for now it's perfectly PG.
This definitely looks better than my last attempt at Rocketshippy smoochin'. I was in the seventh grade and promptly lost the picture on purpose out of embarrassment. Drawing them smooching is hard, because of Jessie's hair, but I looked at several fanarts and doujinshi to see how other fanartists do it for reference. Dirty doujinshi are useful sometimes, can you believe it?