We have a selection of invitations where you can upload your own design - they can be found [here]. The uploaded file needs to be in a JPEG format.
For a high quality print, please ensure that the artwork is a minimum of 300dpi in resolution, and that it matches the dimensions on the format you're ordering, as well as a 3mm bleed on each and every edge - for example, for a portrait invitation, sized 127mm x 177.8mm the artwork size would need to be 133mm x 183.8mm.
Please note that we will not be able to print transparent files. Do get in touch with our support team if you have further questions regarding this.