Well you can always clone the asset, or even better. Save the original CDP files which you have, and if you stuff up one of the assets, close it, delete it and start from scratch, or even easier try a revert to original first if you're that worried.
The only thing you're wasting is your time and a few electrons. Remember there's no expensive wood or plastic kits here.
Have some confidence in yourself, dude. It' really not that hard.
John