Yes I can try to help you with a new site. I have some questions though so that I can help better, especially as I'll need to set it up on my own site to test it's working.
1. What species do you want? Just one? Or are there multiple?
2. What layers do you want? I recommend keeping the layers the exact same for all species to make it easier on you and so there are less code adjustments.
An example might be: Lineart, colouring, markings, background, companion mini-pet (bg and mini-pet can be added through items), etc. Also do you want multiple marking slots, etc. I recommend keeping it simple at the start so you can see it working and then it'll be easier to make adjustments later on after you have the base set up.
3. What growth stages do you want? As in egg, baby, child, adult? Just adult? Egg -> adult? Again, the layers will be the same for the most part (except for egg which would probably only require line, colour, and maybe 1 or 2 markings).
Also keep in mind that this mod doesn't have a complete site integration yet. There are multiple things we need to change to get it working, some I haven't even tackled on my own site yet. Like we need to change the breeding, the owned adopts, trading, pounding, adopting and allowing admins to make pre-made adopts for people, custom pets.... So we'll just take it one step at a time, and start with the custom pet generation for now. Once we have that working I can try to get other parts done.