How do I make my project a maxstat project? I have a completed one and an in-progress one. Is there any way to make a completed project maxstat? And how do I make my breeding project maxstat?

before starting stating a project you will nead :

1. at least 3 compatibles parents ( i highly suggest you to be 100% done with the visual aspect of the project to avoid a trait 'escaping')

2. a good stack of stat boosting filter ( prismatic prefered), on average you nead about 30 prisma to finish a project like that starting from 10-15 stats parents

3. an empty tab to place them in (you dont want to lose philtered pets)

Once you have all of that, you are ready to start the statting phase ! The process is about the same as what you have done to achieve the visual aspect, except that you nead to add philters when the pets are hatching now. An offspring, before hatching, will have stats ranging between the one of it's parents (the philter will add aditional base stats afterward).

if you want more information, this guide should help you with that. ^-^
https://www.sylestia.com/forums/?thread=16129