There is no set way to show your love to God or anyone for that matter. Love is designed to be genuine and sincere. Love is natural. Love takes time. When the bible said in John 3:16 God so loved the world he gave his only son. Love is an action from God's heart. When David writes Psalms101:1 I will sing of you Love and justice to you O Lord I give praise. Again David is singing his Love of God from his heart. In the book of the Songs of Solomon 3:1 All night long on my bed I looked for the one my heart loves; I looked for him but did not find him. King Solomon through poetry expresses his love for his queen. Again from the heart. So the bottom line in all of these examples, show that expressing love no matter in what form does come straight from the heart.