Jackie this may be a silly question but it's something I always struggle with. Could you share with me how you get the coverlet/quilt to tuck in so neatly?

I have a king size bed and I buy king size bedding but it always seems to be short on the sides even my duvet doesn't flow over the sides like yours does in other bedroom pics I saw. What am I doing wrong? I so don't want to have to go the costly custom bedding route and you mentioned that yours were from Homesense so maybe there is hope for me????