I love your first one there. The smudging is great and the render is blended nicely into the background. The lighting is good because it isn't too bright but you can see where it is which is a bonus. The right side does look a little bit plain and empty, so maybe put some effects in there or some C4D's. The text is positioned well but needs to be executed better. The font is a bit boring and looks a bit too plain for the render.
The second banner is a bit cluttered. The background is just as powerful and bright as the render which isn't too good. It draws attention away from the focal and makes it hard to see where the focal should be. The lighting is good but could even be a little brighter.
The final banner is great! Love how it is mainly focused around the lighting and effects on the right are excellent. The clipping masks and splatters are great and makes the banner have nice depth and flow. The text is great, although it may look better if you moved it to the right where it is kinda dark, under his arm. The blending is good again and the background is composed nicely.
The second banner is a bit cluttered. The background is just as powerful and bright as the render which isn't too good. It draws attention away from the focal and makes it hard to see where the focal should be. The lighting is good but could even be a little brighter.
The final banner is great! Love how it is mainly focused around the lighting and effects on the right are excellent. The clipping masks and splatters are great and makes the banner have nice depth and flow. The text is great, although it may look better if you moved it to the right where it is kinda dark, under his arm. The blending is good again and the background is composed nicely.