Avoid taking the pictures of flowers in direct and harsh sunlight. Also, avoid use of flash, as petals are very reflective and easily overexpose the picture. Also, avoid taking the picture of flowers on a windy day.
Shaded places, cloudy days and golden hours are the best for flower photography. If, you are to take the pictures of flowers on a sunny day use a white umbrella on the flower to have a diffused light.
A macro setting of the camera with a tripod stand is good for flower photography but it's not essential. However, a firm rest for the camera should be used.
The inset pictures of a bunch of flowers were taken during morning golden hour with macro setting from various angles.