I apologize. I meant to ask if you had drawn any of it yourself, not implement it into your mod. That was my bad
The main problem is not drawing some pubes, or taking them from another mod. One pube will fit for all the nude bodies of the same girl because they are all aligned at the same position, so it's just copy and paste. The main problem are the animations, where each frame is different. If not done right, it just looks bad even if it's off by only one pixel. Therefore, each frame must be aligned with care, frame by frame, so that everything fits. Same for pregnant bellies, or clothing. I guess that's the main reason there is so little pregnant sex in the original game, and so few pubes.
That being said, yes, I've drawn most of the hairy content myself, especially the newest additions (Grace, Crystal, Josephine, Roxxy, Becca and Missy), but also a good part of what I took from Secret Worm because my mod has many more images, especiallly in animations.