SF, that is an excellent render.
That one can go in the tall, vertical slot on my page. :)
I think all of my free textures are posted on the developer's site.
I do want to update them a bit though.
If the Danika texture isn't there, I will post her later today.

As for size, 800x800 up to 1000x1000 is fine.
It will be scaled as I fit it into it's location on the page without losing quality that way.
A smaller render might end up too stretched looking.

For those who will be doing thumbnails to show off their freebies for this site, best at 300 by 300 if possible.
They can be taller than wide or wider than tall if needed but to stick sizing compatible with those guidelines.
Example: 250x300 or 300x250 or similar somewhere n that range, please.

Your actual promo images can be larger, up to say 1500x1500 if needed. :)

I am having to slow down today, myalgia hit again so hard it had me hurting from finger to toes.
Now it's still in my hands.

Let me introduce you to my multiple personalities. :)
     BluEcho...Faery_Light...Faery_Souls.