1st one render looks lq and washed out. The bg looks quite boring and the effects also look quite lq tbh. It also look like a floating head. Needs lighting too. Also not a fan of the size, not high enough imo. Ive never rly liked borders so i dont on this one either ^^ kiu tho

2nd one looks a bit better imo, but still looks washed out and ur flow is wrong. The stuff in the bg is goin to thetop left corner, while the flow of the render goes to the top right.

Work on some more vibrant colors, flow, blending and lighting imo