The Shrine is located in the Great Hyrule Forest. Go to Bravery Island right above the forest. From there go to the small island on the south east of Bravery Island. There will be a tree stump with a leaf on it. Dive off from the tree stump and land at the shrine below (you'll be able to see it as you descend.) Be sure to use your paraglider to soften your landing.
The shrine itself is just a blessing shrine. Simply move forward, open the chest, and then examine the altar for your well-earned Light of Blessing.