Please accept my deepest sympathy. You and your family are in my prayers. I lost my dad 22 years ago yesterday. I have so many wonderful memories of him. Your memories will help both now and as the years pass.
I am so sorry for your loss. It's always particularly hard to lose a parent. God be with all of you after this long time that he has been ill and take heart in the peaceful expression. He is relaxed now and with other loved ones.