MAKE RESOLUTION HIGHER TO PICTURES TO FIT TO AN A3 PAPER

Dear Sir or Madam, I want to print some t-shirts.I have 4 pictures that I have processed them in [login to view URL] problem is that the original resolution of the jpeg photos are too low and I need them at a good resolution for an A3 paper so they can be printable.I send you the four original pictures and the final processed pictures.I want the final at a much higher resolution at the size of an A3 so I can print them.I need the job to be done in 1 day. I send you also the pictures(the original and the processed) For any questions please let me know. . Kind Regards Vezirtzis Pantelis