Regarding technique, you can practise the jump on a lowish speed over 5 to 6 seconds on a 52x16 or similar. Pick a lamppost or line in the road and just kick at a reasonable cadence and work on technique keeping form and recruiting the muscles. This is a good warm up technique when putting 5 of these together with 200m in between, finish with one full sprint using the practised technique. This can be part of an endurance ride once warmed up.