Now THAT is something that’s really up to you ‘ v  ‘ you can learn and practice drawing anytime but thinking of what pose is the same as “what do I wanna draw”. For me, the easier way is to think of a phrase. Example is the recent 6 am Adrien I did. All I thought was “Adrien still sleeping at 6 am”. Eventually, you’ll visualize the possible outcome of your piece. You can refer to references for inspiration if you really can’t see it. All the rest is up to you!