Questions:

Q1) How can I get my IQ accurately?
Q2) Did you check my answers properly?
Q3) May I pay to you for Mislav Predavec's tests?
Q4) May I join your IQ societies with scores on tests that are not listed on your site?

Answers:

A1) Measuring high intelligence is not an exact science. However, thanks to few enthusiasts high range IQ tests provide a good measurement
       tool for that purpose. If you scored IQ=160 (sd=15) on one test, you cannot be sure that your IQ is that high. But, if you scored in the 150-160
       range on several more tests, then your IQ is likely to be around 160. Trying tests of different kinds and from different authors can provide a
       slightly more information, and I recommend Real IQ Society. But be also aware that trying many tests is more a hobby than IQ measurement.
A2) Yes, of course. I can't afford myself such a luxury to send false score reports. 
A3) No.
A4) You can suggest a test, but please send a link to the test or its norm/statistics. If I add a test to the list of accepted tests, you can join then.