What can be improved?

Asnoiru makes some great points. I think in addition to what he said, I think you can ditch the heat pad at this point. It’s no longer necessary.

could be : pots filled till verge humidity higher while in veg stage temps few degrees lower fabric , not plastic pots used garden trollies to collect run off, not saucers but generally they look very very nice, maybe i see a bit big interval between nods, but stems are thick, colour nice, should be great grow ! and lastly if you want any advice, create diary, fill in as much as you can weekly, way easier to backtrack or help if some issue will come up.