I have a glitch. as most of you know you have to get all the paintings in the art museum to get the golden trainer card, and to do this you must win master rank of all the contests. I have won master rank in all of the contests, but didn't get the paintings for two of the contests. If you have any Idea of what is going on with my game it would help. Also I have had my game for over a year, and I do have Jirachi, but I got him from the gamecube version of collosium.
What happened is not a glitch. Winning the master class in a contest is not what it just means. You also have to win top votes (you know when they say your name and this little hearts appear above the audience) which will require a scarf and max of cuteness etc depending on the contest.
If your stuck on cuteness get a pokemon with sleep and snore, so when you use sleep then snore you will get bonus points!!
Hope that helped