Ok i really suck at making banners..probably because i cant "clean" them well..i really get mixed up...so i got photoshop...but its still really hard...plz tell how to clean pictures really well...mean while plz rate these...
You must be referring to the Magic Eraser tool I think, so try experiment more in Photoshop.
The first one looks like you tried to remove its background but...not neatly.
And the others looked like they were made in Paint.
You need more practice in Photoshop as its highly advanced than Paint and is very complicating.
My advice is too try playing around with brushes until you get the hang of them.