Here's how I start my engines. Works good for me hand flipping or with electric starter.
After you have put fuel in and put the fuel line back on open the throttle all the way.
Without the igniter on put your finger over the carb to choke it. Hold the prop and turn the engine over
(don't flip it). When you see the fuel line fill with fuel stop and put the igniter on
With the throttle still open choke the engine and turn it over a couple more times. Hold on to the prop
(don't flip it) you don't want it too start with wide open throttle. Alternate between
choking and not choking. When you feel it fire or bump it's ready to start. Close the
throttle down to idle setting and flip to start or use your starter. If you hand flip it I think
this will give you the best chance for an easy start.