I've got half decent at it over the years. I used to rush to get it done as quickly as possible, and it always looked shit. Preparation and patience are key. Probably spend more time masking and sanding than actually painting nowadays. Also, 1 coat is NEVER enough no matter what background you're covering, even if the paint describes itself as such. Used to dread it, but I've got a freshly plastered bedroom to do this weekend, and I'm actually looking forward to the peace and quiet (with snooker on in the background).