To avoid confusion, here is my most recent policy:

- You may edit anything I made in whatever way you want, unless stated otherwise.
However if you want to upload it somewhere you must credit me and it must never
be uploaded to a pay site or a site like TSR without my permission.

- If you use my textures to retexture hair, I would like full credit.
I paint all my textures by hand and a lot of hard work and time goes in each hairstyle
I make, please don't take the credit for simply just slapping it on a different mesh. (sorry if this comes across as rude)

- Do not upload my downloads to other sites, I do allow my content to be included with Sims etc.

That's all I can think of for now.
If you have any questions, please leave a comment in this post.