well reference won't get you to space though.. xD, it only helps with what detail to put in your drawing
you won't understand more of the vectors with just that,
for example: do you know that there are a lot of artist who use a lot of trick in perspective in drawing their background?, i've been studying perspective and realize that most people do that with their background, and if you follow those people you would just get lost with them cause your so much different in skills and you can't do exactly what their doing about playing with perspective cause you don't know anything about the trick their doing,
it was then i read in a drawing book about point trick perspective, you see you won't get that much information in just using reference, you got to find some tutorials as well, how they draw and how they do it, that's the whole reason why were in this site to begin with, cause we need information of how to draw, if people can just improve so much with just reference then what's the point in this site to begin with?
you would definitely improve using reference but it might take too much time than you think.
for the critique... it's really good now boz!!! I'm really glad your beginning to study folds now! still you should understand more of the movement of the character, it's alright if it's just "folds" but this time it's "clothing physics" you just made you character move a pose so you should be able to understand that you should take consideration of the flow of it,,
with that said.. have you download that book i gave you yet? note that's it's not meant to be just read.. it's meant to be practiced as well