Shelma1, jpeg files are always uploaded first, as far as my experience goes.
Are you talking about your first uploaded file that shows on your profile?
That is already a jpeg as far as I can see...if you want to upload a eps (vector)..
go to your management area..
click on your online files...
When that opens, click on the highlighted title of your image
When your file opens look for the.... "Additional format uploaded" line and upload your eps file..
eps files take quite a bit longer to be accepted...depending on how many are ahead of yours.
What I do is... upload a jpeg image first and when that is accepted then I go in and upload the eps file.
I have not had much luck in doing both at the same time.
Remember both the jpeg and eps file must be exactly the same image and size.
I use Inkscape for my illustrations