Are you planning to add costumes for Her?

Unfortunately, no. Not at the moment.

Could you make Sektor or Noob Saibot?
Or MKX Sub Zero and Scorpion?

I could make Noob Saibot afterwards, although Sub-Zero and Scorpion are already out on the Workshop. All of what you need to do is search for them.

Is there a possibility that I could remove all of the masks to get only her face? Because I have no idea on how to do so

There is. All of what you need to do is head over to the playermodel window, click on the "Bodygroups" tab and remove them from there.

what other mk11 characters do you plan to do in the future, or if you are going to do characters from mkx or mk mobile?

For now, I am planning to do Frost, Kronika and Noob Saibot from Mortal Kombat 11.

Do you plan on doing the rest of the characters in mk11 or just those 4

I plan on doing all of them after the ones that remain to be ported have their models extracted and released for usage. Aside from that, some may be released on to the Workshop on my behalf in a span of a week (or less) for each one, as they take up quite a lot of my free time to make and porting them with both all of their accessories and an optimised mesh (as well as textures) while retaining their original, HD quality can be somewhat exhausting to do. For that reason, I tend to take breaks in between each model.

Do you plan on porting MK11 models to Source Filmmaker because I do plan on porting one of them on there since I have two of their models ready to be ported? I plan to port Johnny Cage after I'm done with college.

I do plan on porting them at some point, although I'd like to add facial expressions to them first before doing so.

Could port ermac from mk11? I know he is not playable, but he dies in the krypt and has a new amazing looking design, it would be nice to take a look on that.

@A WILD BLYAT I might be able to at some point if they extract his model from the game.

could you possibly make like a bodygrouped normal skin for the raiden addon? (the raiden that shows up in the outworld arena and the rest of the story mode)