Botched upload

I just tried to upload something – a two-panel tumblr comic I stitched together in Inkscape – and the result has been…
 
Well, crap, if I’m honest.
 
>>1644281p (merged)
 
Apparently, only a corner of the Inkscape file actually got recognized as being the file and that’s all that went up.
 
So I’m her to ask two things: one, is it possible to take this down so I can try to upload it properly, and two, what could have caused this to happen?

@FrustrationInExcelsis  
You didn’t change the canvas size to match, or export the selection or image versus the page.

Thank you. I figured out how to edit the canvas size, and it seems to be working better now.
 
That said, only the first panel (the top vertical half) is showing up in the file preview on my computer. Is that normal?

@FrustrationInExcelsis  
Did you save it?

@LightningBolt
 
Yes.