Flowers come in a variety of sizes and shapes. Be sure to take that into account when deciding how to approach flower photography, whether it’s a close-up or wide angle photo of the entire garden. Take more than one photo of each subject you decide to photograph.
But just taking multiple images of the same thing, with the same settings will accomplish nothing. Be sure that you adjust your point of view, your angle, your depth of field, and your composition as you photograph.
Then when you get home you can try to determine which combination worked best . . .