Early game is the most important part of the game for nidalee, try to have a plan that you will follow during loading screen, think about who you should path for, if you should invade, if you guys scale or get outscaled and what build you should go.

Nidalee is very good at invading, this season your ennemies will be higher hp than before but so will you, don't feel like you should never invade but prioritize full clearing. If you are looking for an invade, ward the ennemy raptors / red with your midlaners help to see where the ennemy is pathing and then path towards the buff he will be clearing towards. Ideally you want to have red buff because you will be stronger in the 1v1, but it isn't necessary. Keep in mind if you have prio before going for the invade to know how much time you have to make your play and if you should leave quickly or you can stay in the jungle with your teams help.

During the Mid Game, when setting up objectives try to get there 30 seconds before it spawns so u can trap it up in the right spots (bushes and chokes). Play with vision and try to throw spears from fog.

Nidalee is really strong at this point of the game, if you have rocketbelt you can play even more aggro than usually, you can even poke with it or bait important abilities by dodging them with it.

People believe that Nidalee doesn't scale but that is mostly because they have had such bad experiences with other Nidalee players who had a huge lead and threw the win, keep that in mind if you get flamed for picking her because it does happen a lot.

At this point of the game you should have 3-4 items, if you decided to go rocketbelt + liandrys + ludens, your poking ability will be very very strong and you can play the fights slow, you really shouldn't get impatient, even if you hit a good spear, don't be get tunnel visionned by it, look at ur conditions and at your teams conditiions, is this really how u want the team fight to go? Engaging as nidalee can be good if you have zhonyahs and bait the ennemy team but think about it carefully.

Enjoy the builds, I stream almost daily on my twitch