Put some more glue on the cotton wool and then stick on the shiny stars etc - this gives it a more professional finish. (toddler-activities-at-home.com)
Again, if one is looking for a truly professional finish I'd use the commercial brands. (homeremediesrx.com)
Another factor is if you want a roller, this will cost more but means you get those brilliant lines left in the lawn to give the cut a really professional finish. (idealhome.co.uk)