Alright lad.
You've def improved from the last tag, which i'm glad for. Since that means my critique and feedback where used
Atleast with effects.
Alright, what i still miss is depth and there is a big lightning miss on this one, but i'll come back to you with that one later.
Thing is that now that there is a bg and a render, you really gotta make them melt together somehow. I advice you to download some C4D packs, which can be foundYou must be registered for see links. Here's also aYou must be registered for see linksfor that. Very effective way to make effects that circle around the render/focal. That makes it blend much, and give a relaxed feeling for the eyes. If the depth is right ofc. Here's also a niceYou must be registered for see linksfor blending and depth. It's for photoshop and gimp, so i hope it works fine.
Alright, the lightning is very strange here. Look at the render. He clearly has a red reflection on the other side of his face/head than the lightsource is comming from. Also there is no lightsource that is shining from that direction in the tag so. Looks like a bit of a fail there xd.
There's only one colour here. That is red, since black and white aren't actually colours. However you've mixed them well, which isn't kinda hard with a grayscale >_O.
Add a border. I don't really know how to do that in gimp. I suggest you google that .
Anyway, great improvement from last time. Now there is what i mentioned, and add a text/logo that is missing for the next one. Also always check on the render if there is a reflection on it. Then make a lightsource that is realistic for it. So it really matches the direction of light.
Goodluck ^^