After weeks of training and teachings, I can finally do it. I can open a portal, leave it there, and close it when I come back.
Leo uses the word detach, but it's not quite the right one. I feel a link to the portal for the whole time, even after abandoning it.
The big difference from my usual exercises is that the portal will be bigger and durable enough to withstand a few days of work. Then, I will close it and forget all about it for a while.
I've tried a few times already with smaller gates, so I don't really feel ready for the big step. Yet, I won't feel like that ever.
I know myself enough to realise that I will have doubts till the end.
It's better to get it over with and stop fretting each and every day. Also, it's better not to make Leo worry for nothing.
We reach the perfect spot for the ritual: in the middle of the forest and next to a cliff. I should open the portal high in the sky so that humans don't jump in it by chance.