For me, it's very much about the fibre prep. Maybe 85% fibre prep, 10% skill, 5% star alinement. It depends a lot on the spinner and the fibre. Finding what works for you for this fibre might take a bit of experimenting.
Most fibres, I like to have them less organised when spinning woollen. A rolag, puni, or off the side (not end) of a batt works well.
What the heck is a rolag, puni and batt?
Basically, any prep where the fibre is almost perpendicular to the yarn, works well for me. If the fibres are organised in the same direction as the yarn, I find it makes a less even long draw. Like in this
video, she's spinning commercial top from the fold.
double drafting helps to create an even yarn. We get our yarn started, then pinch near the fibre source, and as the twist builds in the yarn, pull back on the yarn. The twist will gather in the narrow spots allowing the thicker bits to grow thinner.