suggestions

It's a little flat, so try using contrast to add some depth without overpowering the sky blue. Too much negative space on the right hand side, crop it closer to the render. Blend on the streaks across the Render could use some improvement. Remove the dark blob from the bottom right. Text is almost unreadable. Render looks fogged over in comparison to the BG, try bringing up the saturation a little to compensate. Then add a border.