Position size in relation to account size

Hi Pat, could you make a video on sizing? How many shares do I buy and where is the risk spot? Do you sell when it touches the line or wait 10m candle to close below when going lower? How do I calculate my size based on my account size? Let’s say my account is $10k. How many shares do I buy total? (I know initially you buy 20% or 30% only not full size). 

for example FUV  on 1/21/21.