I'll be honest...
The first one is good, but maybe a bit more colouring, so it becomes more special? Just a suggestion...
The second one is too blurry. That's not good, so don't blur them too much. Have more focus on colouring and cropping and text, like the Ric and Mattie one I quoted the first time I wrote in here. That one I really liked
The third one and the fourth one look like they've been sharpen too much. That's not good either. Not too blurry and not too sharp.
The two last one are actually quite nice. I prefer the last one, though. The other one looks a bit too sharp.
Now the banner: Again, colouring. Very important. Try to add a few more colours (I can show you some really good tutorials) and the text is confusing. It's all over the place and you can't really tell in what order they're in. But a good blend with the Martha pictures
Now I feel bad I'm not trying to destroy your confidence, I'm just being honest and letting you know how you can become better Please don't hate me