Hey guys! I have tried my best, but I feel like I don't improve... Does anyone have any advice? (I attached 2 minutes and 30 seconds gesture drawing here) Thanks!

Hi, everyone! I'm having trouble getting a likeness in my portrait. I took the Loomis method course and my portraits have improved a lot, but the drawings still don't look like the original. Does anyone have any tips or suggestions for improvement? thank you and have a nice day! :)