I can't create a UV map for this object and I don't know why (sphere unwrap) I have a horse model I'm working on. So far, so good.

Now I'm trying to add eyes with an iris texture. I added two spheres, assigned a material and a texture, but the UV Map is too small and needs to be resized (my horse now has insect eyes. Every face of the sphere has its own texture.)

When I try to apply/resize my UV Map (in Edit mode), here is what I get:



The sphere has a Material &amp; texture, so it should work:


So, what am I doing wrong? TIA.
The faces of your sphere are overlapping in the UV Editor because you must have unwrapped with the Unwrap option (first one) without any seam on your mesh. The result is that each face displays the pupil. You should mark a seam on one of your sphere longitudes (select the edge and press CtrlE > Mark Seam), then select all and unwrap again (with the first option called Unwrap). This time it will take the seam into account. You can bring some corrections like scaling up and down the UV in the UV Editor and align it to the pupil.