I'm having a slow start because I'm not used to thinking like a farmer. I *have* read the beginner's guide in this forum and similar advice for those of us who are complete noobs at this, so hopefully I'll be able to avoid annoying all of you with stupid questions.I decided to start with a 330 ele build, since it's so versatile and ele is my favorite profession. I've tried variants of the version on PvXwiki and Joshua Ed's version. I'm having no problem staying alive, but I can't seem to output enough damage to kill stuff (esp in HM). Am I missing something important? Is this build unable to kill harder creatures? Is it not designed for solo? I would really like to use this for soloing areas of Nightfall in HM and farming for greens. Is this build weak in those areas?
Thanks in advance.

Thank you, everyone. Great suggestions! Aggroing enough enemies was definitely what I was missing. I didn't realize how important that was to keep up my dmg output with Sliver Armor. Without changing any skills, I'm now having good luck with insects in hard mode as long as I fight enough at once.