I need 1 Large Banner Design and 1 standard banner design

Design details: I need one large banner designing for use on the printabanner.co.uk website for a 7ft x 14ft banner for inside and 1 banner design for a standard size outdoor banner, again to be used on the printabanner.co.uk website so must be the correct dimensions and file type to simply upload on this website where I am buying the banners from.

I have all the images required and also the font style I have in mind (graffiti style font) so must be able to use my images and text and create a great banner design for both banners. Future work is a definite for more banner designs
Banner sizes: 7ft x 14ft plus standard banner size also
Banner content: photos, logo, business website etc (all info supplied)
Ideas for the visual style: graffiti style font for both banners
Extra notes: