Half head of nano beads

[LianneB99]

How many nano extensions would I need for half a head? She has fine hair and doesn’t want it to be bulky? Also I have only done full heads and half head were not covered in my
Course and unclear about placement ? Can anyone help?

 

[cmsuper]

I use around 100 strands for half a head and placement is exactly the same just more space out x

 

[LianneB99]

I use around 100 strands for half a head and placement is exactly the same just more space out x

Between the rows or the beads?