Hi,
AP already has some great tools for making seamless textures (Affine Destort, Frequency Separation, Inpainting, etc..)
There's a great official tutorial video on it.
The end result is something like this:
Although this is a properly seamless texture, it has some low frequency features that means the tiling/repeating will show up.
One thing that would really help would be to having a tiling display mode so that we could preview the tiling effect, like this:
(note: I boosted the contrast here so its easier too see)
As an added bonus, it would be super cool if we could paint in this mode and have the painting automatically tile/repeat.
On a related note, being able to rotate the canvas view would also be very handy, but I think this has already been requested.
Thanks,
Passive