i just installed "enhanced night skyrim" using the NMM and it doesnt appear in my load order, still new to mods, did i do something wrong or do texture mods not appear in the load order normally?.

Most Texture mods do not have an ESP, so you won't see a mod in the list.

ah good to know, thanks for the help

Texture replacers come in two main forms:

1) A dummy ESP/ESM with a BSA file
2) Loose files

The first one has the advantage of being easier to manage but takes up a plugin slot. With the second one, one has to manually manage the install order and be wary of the fact that loose files override the files in BSAs. As a result, they may need to extract some BSAs if they're using other replacers for things to function as they wish. However, the second method doesn't use a plugin slot.