The last one is IMO the most attractive and had the best layout with the yellow one as the back, but you need to tweak a little things to make it better, first always try to middle the text in the space u put it in make sure it's centered in it's design space and to be specific the name
"ANGELA CORES" You will see it needs to go left a little to make it even from both sides, also the main company name needs to be centered correctly just a nudge down, such things can be caught by eye and give the feeling that there is something off with the design, so make sure u balance spaces and position your design elements right to get more complete and professional feeling, Good luck.