Sorry I have a weak understanding of shaders and shader terms, but can I add a light glow to this block texture?
Does anyone have a item for share or purchase ?

You need post processing for that. An HDR bloom shader (real hdr, noth a cheap fake) should work perfectly in combination with a luminance map.

You can use shade-c for that.

But I have to say that the amount of glowing parts of these blocks is too high, it won't look very goodd imo.

Thank you for the reply. I should increase the texture so more there are less 'streaks' and more black,gray area..
I will give shade-c a try and see where I end up.