Yes, I assume it's a printing challenge to make something nice of a neg like this and not just kitschy "Celestial light". My experience with toning (and alternative processes) is very limited (particularly in view of what is often displayed on this site!) - one problem is that in Sweden nowadays it's very hard to buy raw photo chemicals due to environmental regulations, will have to rely on manufactured products.
Svend, thank you for your comment!
//Bertil