A4 Leaflet design required for business

We are an online company selling childrens party invitations / cards / Thank you notes, what we need is a nice simple eye catching A4 Leaflet design only (as we do our own printing).

We will require the leaflet ASAP so the job goes to the person who can deliever in a short time frame, the design must be supplied as a file and in PSD format as we may need to alter prices at a later date.

For an idea of what we do visit www.custom-invites.net, please only serious bidders.