Yes as Avalon says, always net it when the fruit is ripening otherwise the birds will get there first. Mine is a Stella variety same as yours but even though it’s a huge tree now and too big to net only once did I manage to get a few pounds of cherries. That was the year when I festooned it with bird scaring things like cds dangling on string , plastic shopping bags tied on the branches, and most terrifying of all footballs painted with eyes and hung in old stockings tied to the tree!!
Poor tree it was an embarrassment, however it did keep the birds off.