They're kinda simple but still very pretty despite it. Like DRM said, they look great side by side. Not a huge fan of the tiny size, doesn't give you much space to expand and give it your own touch
Im 99.99% sure when i say that your tags are probably the smallest ive ever seen, i reckon going for a slightly larger tag as any smaller render and you will start to loose details of the render and the tag will be too small still to see any great detail in it. my personal pref it 350 x 115 and it works for me, dont know why i say that come to think of it but if it helps :lol:
Nothing groundbreaking, and they don't look very complex, however they're good looking and have perfectly good composition. You don't need much more than that.