effects seem transparent on some part which affects blending..text is off...lightning (i mean shading) should be abit lower, need more blended color schemes. other than that it's alright...keep it up
try to use brightness and contrast effects + photo filter (default), use mechanical C4Ds and try to use blue c4d over your render .. it will looks better ^_^
For The Konan One, It's Blended, Yet Not Color Blended. It Just Seems The Render is Kinda Outta Place From The Whole Image. Other Than That, I don't think I have Any complaints.