I can't say I'm much of a DIYer, but how about a DIY peplum top with no cutting/sewing/gluing? Not bad, right? The secret is all in layering. Check out this image from Elizabeth and James Resort 2015. I love how the airy-breezy top is layered under a graphic, mid-to-heavy weight top. The effect is really lovely.
The Bettie shirt is a fine, lightweight silk which would be perfect for this style. Try the basic white Stark Naked or go bold with 4 other candy hues.
I'm envisioning this as a really easy way to re-style your crop tops or even just add a little mono-chromatic interest to a classic pop over top. Check it out: