what is the size of this banner/header?

1.4 mb.. is that what you mean?

can you be more specific about the measurements of the shirt design 

Hi,

I am unable to see any of the files that you uploaded. This website occasionally has problems with client submitted files. Are the files on your website somewhere that you could tell us the url and we could get them from there? Or, photobucket is a simple, reliable option too...

Thanks!
Deanna