Well, what can I say about my High Elves.... Now, you must realise that I refuse to play 8th and I haven't actually played a game for about half a year. I think the last game I played was as Albion against Bretonnia as well. Before that was Nippon against Dark Elves. So, well, just bear that in mind.
1. Never play a game where you can't afford a Prince on a Moon Dragon. My Prince Raethelas has gone down a few times (Usually I have an item which gives a ward save and a magic sword which ignores armour saves) but I have never lost Minaithir. Not once, despite several cannonballs.
2. You main force should be a large block of Sea Guard with a Spearelf unit on either flank, positioned in a roughly arrow-head formation. These units fight in three ranks thanks to Martial Prowess, and they always strike first. Against other line infantry, they kick ass. Best off putting the BSB in the Sea Guard unit.
3. Phoenix Guard are an icredible anvil. If your luck is better than mine, they might even kill some stuff. For some reason, I can't manage to, despite WS 6 (If I recall correctly) and halberds. A unit of 15 will hold against anything nasty. White Lions are also a good anvil, but you will need a large unit as they're armour is relatively light. Stubborn helps though, as does the Strength 6. A small unit of White Lions is actually good for monster hunting in my experience. You'd probably want 10, but I've used a small unit of 5 to take down a Treeman.
4. Dragon Princes are some of the best hitting power for value in the game. Never leave home without them. Oh, and don't forget they're immune to fire attacks. I've done that and practically lost the game because of it.
Okay, it was a team game and my ally had already lost his army save a cannon, but my forces were holding well. The opposition was a classic Skaven Skryre horde and a Nurgle Warrior alliance. The Chaos forces had chewed through my friend's Empire, but they'd ground to a halt, their knights held up by my Phoenix Guard, the Dire Wolves and Marauder Horsemen had been shot down earlier and the infantry blocks way out of position.
Meanwhile the Skaven Slaves and Clanrats had hit my main line of spears and were being slowly beaten back. My Dragon Princes had not seen combat yet and I planned to see them hammer home into the enemy flank.
And then the bloke revealed his Warpfire Thrower and I screwed up my armour saves, consigning the Dragon Prince to ash and halting any chance I had of seeing off the Skaven before hitting the Chaos Warriors. Now if I had only remembered they're immune to flaming attacks, that might have been avoided.
But that's why I only play in games that let me have a dragon. Because we didn't win a single match that day, although admittedly the two players we were up against before that team played Wood Elves and cheated so bad that the dice came up with pips that spelled "LIARS!"
Anyway, that's all I've got for now. Probably not that useful.