No offense this is horrible. You got a lot to work on pal.

First image,

Background all blurred and the focus on the render ****s up the whole quality.
Quality bad
Bad lighting.
And black on the edges makes the image worse than it already is.
Bad text placement
Lacks depth

Fix up on those things.

Second image -
Bad color coordination.
Lacks depth
Bad render placement
Bad background , looks like u just took the same render and smudged it everywhere and slapped the same render on it.
Fix up

Thanks