Expressing heartfelt blessings to your child is universal. If you want to say 'Doa Terbaik Untukmu Anakku' in English, a common and warm translation is 'My best wishes for you, my child' or 'All the best to you, my child.' You can also use phrases like 'I wish you all the best, my child' or 'My prayers are always with you, my child,' depending on the specific nuance you want to convey. These phrases capture the sentiment of love and support you wish to impart.