They call it "past PERFECT" for a reason: It's not always fun to learn, but it's always rewarding to HAVE LEARNT something.
I should have done this one last week...
Unfortunately, I didn't think about doing a video on this until Monday, when I started seeing all the pictures of everyone at Carnaval. I hope that you had a great time at Carnaval, and I hope that this pair of words - custom or costume? - doesn't give you trouble.
I apologize for being a little slow with the videos this week - it's been busy. There will be more to come!