1. There's a couple of common ways to distribute your look. Either add her to a scene, use the save scene and add to new var package option or you can just open the package manger and add the appearance preset. A var creation guide is below.
This is a quick and dirty guide on how to create a .var file in Virt-A-Mate. I created this information for a friend, decided to post it on the hub. Thought It could be helpful for others. Use the red numbers below for locational reference. When...
hub.virtamate.com
2. This kind of thing is very common in the DAZ ecosystem with many models created from existing models. These will be marketed as "Jenna for Victoria 8" or "Kaori for Sakura 8" etc etc. Its worked for over a decade in the Daz stores and we should follow suit here as its totally transparent showing exactly what you have built upon, assuming that is the base models licence allows derivative works to be created.
As some of your models use others looks as the base you need to check the base looks license and see if your allowed to build upon that creators work. Most importantly for me you should be retaining the morphs and references to the original models wherever possible.
Most creators will have merged their looks into a single morph to distribute as this cuts down on morph dependencies and we all like clean packages with minimal dependencies. What you should do when merging your look is to dial out the base models morphs leaving only your changes before merging the changes into a single morph. The actually distributed model will use 2 morphs, the base character morph referenced from the original creators .var and the morph containing your changes which will be included in your Var.
This will be fine for looks that are available on the hub but if you intend to share looks based off paid content you will find a few issues. PC licenses are basically private use only so you cant merge them into your look and distribute in any way.
Of course no one can stop you posting a look containing your changes and requiring the paid content as a dependency but don't expect a good reception on the hub. Many people wont have the PC and people and many wont even look at content that isn't fully hub hosted.
If in any doubt just send a DM to the original creator and get their opinion, most are very very nice people and will be all to happy to come to an arrangement.
Any questions on specifics feel free to ask.
J