Baaaaad background

This is probably my only successful digital art . I know the background sucks, dont say . Well you see, I was finished the girl on ArtStudio in the iPad, when i thought: heyy... theres no background ...  So then, I started putting random stuff, until I realised it was too colourful . so i thought hmmm ..... lets put some white in it . but instead, I PUT SPARKLES!!! WTF!!! so then i pressed the undo button, until it couldnt undo anymore, erasing all the white sparkles and some of the colourful lines at the back . it couldnt undo anymore, as i said, so i put all the coulors back (redo) because it looked worse when it was half undone . ;n;