Ok tips... maybe as a married aspie I can help here!
1. Don't profess undying love on the 1st, 2nd or even 3rd date. It sets off every internal warning in girls and sends them running for the exits.
2. Don't "always" be available, keep having a social life with your friends etc, you want her to know she's an important part of your life, but not the only thing in your life.
3. Don't lie, even a white lie, She'll know.
4. Play around a bit, not in the sexual sense, but don't be too full on with the compliments. If she asks how she looks, be honest, if you can't be positive, be funny. Eg, If she asks "does my bum look big in this" say something like "compared to...?" but quickly smile so she knows you're joking. Keep her on her toes, don't be predictable. I found that it was far easier to get 2nd, 3rd, 4th dates when a girl couldn't figure me out. Intrigue is a wonderful thing
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5. This is a tough one, if she knows you have Aspie (and with that some OCD behaviour) let her know it's controlled, instead of calling her 100-200 times a night you can keep it down to 10-20 if she prefers. You need to be able to laugh at yourself some times. I used to be a compulsive txter, if a girl I was dating didn;t message back in 10-15 mins, all sorts of rubbish flew around in my head. Now I'm the opposite, I seldom reply to txts and don't need to know where my wife is 24/7.
If you want suggestions on how to "behave" check out books by David D'Angelo, a lot of it is rubbish but there are some great pointers in there.
Only other thing I can suggest don't leap into bed on date 1! In my mid 20's I had a nasty habit of going from date to bedroom in the first week, oh and it's inappropriate to move from a girl to her flatmate, but that's another story.
Hope this helps!
Thanks for the tips, as although that's more or less what I've been doing so far it's good to have a few extra pointers that I've made use of to good effect (which is why I've been a while in getting back to you) and to see that the stuff I've already been doing is still OK.