Hi, I've only started Lesson 1 two days ago, so take this with a grain of salt, but I've already noticed this a little bit too, and I suspect it comes down to muscle memory. I draw on an ipad, and I've noticed that the texture and size of the screen are different compared to A4 printer paper, which causes my lines to be slightly off when I draw digitally, so I need to kinda relearn the motions through copious amounts of ghosting whenever I switch between materials. Maybe that will help you too?

I suspect it will get easier the more we do it.