color sanding single stage

Without you having experience da-ing, I'd say do it by hand with a stiff block to avoid going through on an edge or putting in grooves from finger pressure.

Also no shame in scuffing it and trying to put on a smooth coat. If it came out peely this time, just be a bit more aggressive. Make sure you have plenty of light and watch the finish as you spray. If it looks like too much texture spray lightly over that area again. Just remember to be conservative when trying to get it to slick out, so you don't end up running it. On the other hand being too conservative might be how you ended up with the texture. Good luck, and remember no one will be as critical of your work as you will, it's ok if it's not perfect.