How the heck do I carry a game while fed

There have been many times where ive been diana jungle and got ahead early-mid game. At that point I can almost always 1v2 two squishy to semi squishy targets. But because of my lack of presence in lane before lvl 6, about 2/5 of the enemy team is also strong. So me being the furthest ahead on my team has gotta carry. But how do I do it. Ive lost plenty of games because i dont know how to carry when fed. Its like having power but not being able to fully use it. It sucks. I just need pointers so I can be a better jungle carry. Thanks TL;DR how do I carry as a fed jungle assasin
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