Ezreal and being aggressive..
So, I've been playing Ezreal pretty much every game, I feel I've gotten pretty good with him, however, I'm always told I should have gone very aggressive against the enemy ADC right from the start. (I haven't hit 20 so I'm saving for runes) Is this going to really effect my damage that much? I get bursted down so much faster than the enemy does, so playing aggressive and trading often results in my demise, which pushes me to play more defensively. What am I doing wrong here? I hit my Q's, watch my mana so I have an escape with E, and rarely get ganked as I don't overextend when I shouldn't, but trades almost always end unfavorably. Want to get better, would like some advice! Thanks