craftgrrl | Curves, Feathers, and...Decoupage?

I picked up a worn, curvy antique lamp from a rummage sale and was inspired by this picture to make a peacock lamp. I'd like to spray paint it in a similar shade of blue and decoupage real feathers onto the base of the lamp. Has anyone ever tried decoupaging feathers? I've never done decoupage before. From what I've gathered, I should lay down a layer of Mod Podge on the clean, smooth surface and use my finger to spread additional Mod Podge over the object I'd like to adhere to my surface.

Is that all there is to it? Should I use something like a clear Krylon spray to seal it? Any other tips and suggestions before I commit myself to this?

Many thanks in advance. I'll be sure to post pictures later!