In addition to above, do not leave ANY runway behind you- consider stopping the engine and pushing the tail as far back as it will go before doing your final power checks.
Alternatively, if all the checks have been done, consider using full power as soon as you have taxied on to the runway heading (rather than stopping and using full power against the brakes, which is not possible in some aircraft, particularly taildraggers)
However, imho, only use these to increase your margin. If you are not confident that you can take off safely without these techniques, wait for better conditions!