There is nothing much going on in the first one so it seems kinda boring to me. Second one is good. The third one is boring to look at as well. The 4th and 6th ones could be better if there wasn't a big white light in the background imo. 5 is alright and 7's background is not good at all and your last one's background looks too pixelated imo. The 2nd and fifth ones are probably your best looking ones imo. good job though on all of them.