Halachipedia has a good rundown and explains as follows:
When to make the Bracha
According to some it is preferable to say Shehecheyanu before the Bracha on the fruit, however, the minhag is to make the Bracha on the food and then the Shehecheyanu.1
One only makes a bracha on the first time one eats the fruit (that year).2
If one forgot to make the Bracha ...