Hello everybody! :-)

I have created my own high res skin textures (4000x4000) for M4, well basically what I did so far is using a resource texture and adding little things here and there like for example a tattoo. It looks perfectly fine in photoshop and when I save it as a jpeg andf upload it on my character in DAZ, the quality looks horrible all the sudden. The tattoo (very good quality resource as well, not too many details but for sure no low resolution) looks like it is made out of pixels. I find this very frustrating as I do not want to continue working on the skin as long as I did not solve this problem. Is there anything I need to pay attention to? The skin is saved as a jpeg with 100% quality.