If I'm planning on 'looting' my work, I cover the objects with 2 layers of contrasting cloth (white and rust here) so the cuts have a sharp, crisp edges.
As you can see, it's a technique that can be learned easily. I teach this at a one day workshop, and by the end of the day, everyone knows the technique and has a just-about-finished piece. If you're trying this on your own, start small - glue a couple of buttons to a piece of felt, and cover them with a transparent fabric, so you can see what you're doing. Then try it a second time, with a opaque cloth - what my students call "sewing in Braille". I use damask cloth, which has a slightly stretchable weave - use a T-shirt knit for even easier sewing. Good Luck!