Write a letter to your cousin,congratulating him/her on winning a prize at a painting competition.
I hope you are studying hard for your final exams.
I came to know that you have won the first prize at a prestigious painting competition. Please accept my family and my heartiest congratulations on your success. It is great that you have taken professional guidance to hone your inborn talent. Keep practising your art and you will surely grow up to be famous painter one day. We are all very proud of you.
Give my regards to uncle and aunty. Looking forward to meeting you in the summer vacations.