Herbed salmon melt

Name: Herbed salmon melt
Ingredients: 1 can of wild caught Pink Alaskan salmon (7.5 oz.); 1/2 Meyer lemon, 1 tsp. of the rind and all its juice; pinch of sea salt; fresh milled black pepper (1/4 tsp.); 3 tbl. fresh dill, chopped; 1 tbl. of chopped scallion bulb; 4 tbl. chopped dill pickle; @3 tbl. good quality mayo (to your desired consistency); handful of mixed greens (arugula, baby spinach and cress); 4 oz. sharp cheddar, grated; 4 half inch thick slices of sour dough rye bread, lightly toasted and buttered with unsalted butter on top side only; sliced tomatoes and/or avocado, optional; fresh chopped herbs for garnish