yousa gettin better man try some render blending now by setting a soft brush eraser to about 20% and erasing away the parts of his body you think would look good in the background keep it up dude
yeah when you select the eraser go to the control pallete at the top where you can select the brush and select a soft brush about 40 px and then to the right of where you can select the brush pallete there will be two boxes one that says Opacity and one that says Flow change the opacity from 100% to 20% and then erase some of the render to make it blend
