This. So much this.
Another point to make: if you're wanting ganks, be able to help your jungler do it. If they're shoving, let them shove. Give us some room to work with before they get under tower and it turns into a dive situation. Sure, burning enemy summoner spells is fine, but ultimately you want that and a kill, and probably a tower or other objective on the back side.
The PSA version:
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As the JG, I will ping that I am coming to your lane to gank. Check the minimap and see where I am, particularly where I am relative to where you are. If they've warded my path and you know it, tell me. I can find another path to take, particularly to midlane. I often bring control wards to counter their lane wards so I can still get in with little or no warning. If you have CC you would use but it's on CD, that's a good time to say something, especially a good time to ping it so the CD is known. If you've not enough mana to do your combos, this is the time to say something.
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Just because I pinged does not mean go ham immediately before I even get there, then flame because you died. You went in too early. Stop that.
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If I have to provide all the cc myself because you are playing a champion without it (Katarina comes to mind as an example) and they get away, hopefully we got their flash. If I miss my cc (it can happen unless I'm ulting as Vi), I'm letting them go because I just announced my position and invited a counter gank.
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If the gank works and we're going for that tower, that wave is getting shoved. Period. Five or six CS is not going to break your balls over the course of the game. Tower damage or better yet first tower blood is good for you.
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If a tower is not the play (example, bot gets ganked but we have few minions) and the move is going, DO NOT BACK. For the love of all that's holy, go help. I've lost count over how many ganks where dragon was the prearranged objective after the gank works. The laners back, so either I have to back or I have to solo it. More often than not, the enemy will react and get that objective before we get back. Even if you're low, just kill the scuttler or grab the honey fruit. Chances are one or both are available.
Some other bits:
A) If you fed your opponent, sorry, your lane is a damn desert. I'm not ganking the fed Draven/Yasuo/Darius/Fiora/Lucian/Talon/etc just to give him more kills because you're already a full IE down from him. I might help you defend your tower from a dive if i'm nearby. Otherwise, that lane was lost by you. Either you were pushed so hard that the enemy jg had to wipe the drool off his lips or you just got gobsmacked in lane repeatedly. Pick one.
B) Control wards. Buy them. Use them. Love them. The life you save will be your own. Particularly for mid laners: Those little river bushes? Great spots for them. They give you more warning.
C) If you just killed your opponent and you only have around 200 hp or so? Back. Yes yes shoving the wave can be good, but otherwise you're a dive waiting to happen. If you're beyond your tower range, you just posted a neon sign stating "Free 300 gold McKillburger for enemy jg/roaming laner here. If you're fast enough, your laner can get assist fries with that."
Ok, done typing for now.