lol the borders have to go. the tags aren't bad, but in the first one you need to work on focal, depth and lighting, and the second one has a lot of empty space, and is lacking effects imo
what you did on the first one looks great to me but as he said more of a focal and on the second one how you put the render in there is good but work more on a background ya know? seems like a lot of empty space ..
i like the second one but you need to like fix it up a bit. it is sorta monochrome and too bright maybe some darker colors could fix it up a bit ?