... I can see not going out with cold sores. I mean it's not like you're going to start making out with chicks when you've got oozing sores on your lips.
For the other 2, though:
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1. had reason ably short hair(hair has a slight curl when it's gets long and can possibly look like a bird's nest)
2. no acne &
1. Seems like a no brainer... cut your hair short.
2. Couple things you can do here. Can you grow facial hair? You could try that to cover some of them up. Besides that, stubble is a good look as long as it's fairly even and you don't look like a homeless person.
I would also think about seeing your doctor if it really bothers you. There are a lot of medications out there that can help (anything from topical cream to actual drugs that cut acne down a bit).