Slice, chop, whatever the tomatoes, nasturtiums and feta as you see fit and place them in the vessel of your choosing.
Combine the remaining ingredients until you have a vinaigrette and begin to slowly add to the salad until you have a flavor you like. I like less, especially once the tomatoes are going strong and the leaves are plentiful.
Someone once said, "the wise man knows that he knows nothing at all." Therefore if I spend my days seeking knowledge than I am simply trying to be a better fool. Hopefully I will eat well along the way.