Screen Printing Colour Separations

We are a sports brand in South Africa that screen print on our silicone caps and would like you find people with graphic design packages like CorelDraw to create the colour separations as per our colour order and line-up needs. Understanding the screen printing process is therefore important. We will supply the artwork vector file with the registration points and colour order and then want the designer to create the individual layers with any necessary underlapping etc and return the file of all the individual colours' layers to print as the positives for the screen stencils. This will be an ongoing partnership for summer season (Sept to early Dec and then mid Jan to early April) and paid per artwork. Ideally we'd like one person we work with so our needs and specs are clearly understood and a good working relationship is formed. We have an artwork available for a test run in .cdr, but can supply in vector pdf if necessary. Please contact us with your rate, any examples you may have of experience. Thanks :)