Thanks for the comments and ideas guys. I'll take them all into consideration. Drip caps for sure. Drip Rail flashing around the bottom too.
GPW, I hope you enjoy your new window. I look forward to the install. Making a trim ring wouldn't be too bad either but i think a tight fit and adhesive would probably hold too.
This camper got its stripe! The base paint is satin and the stripe is semi gloss. The sun was out today. Made the lighting a little weird in the barn. The three pictures below combined give a good all around view of what it looks like. The paint is a good exterior paint with an extra UV protection additive in as well. The painting is pretty much done. I'm going to paint the family brand on each side and the camper's name once we have one. I ran Blue Lightning past my wife. She wasn't all that impressed. We liked Lightning Sprite but are afraid we'll end up struck by lightning if we go with that.
Spent a lot of time yesterday and today cleaning and organizing the shed. Shrinking the mess so I have room to get going on the next step. On Tuesday I'll get going on the next phase. Finishing Phase.