Hi, thanks for the feedback.
Yes I feel like a lot of things in the game aren't really clear unfortunately. We definitely need to improve that in the future.
The plant problem is also something noteable, thank you!
There is a Nest next to the Can in the beginning. If you interact with it the skill menu is opened where you can spend your skill point and an egg is automatically laid. If you do not have unlocked any new skills (unlocked features are green), you can just close the skill menu and an egg will still be laid.
Hope that helps, thanks again for the feedback.