Transparent vector clipart files, should better not be converted into CMYK color mode. The creators don't care about CMYK. The only thing you can do: Export it as an RGB raster file format. Use Photoshop to convert it into the desired CMYK profile. Adjust the contrast. Votes...
Visual art rules. Illustration entries containing largely plagiarized work, clipart, or photos lifted from other sources will be disqualified. Additionally, drawings submitted for other contests prior to this one will not be eligible for entry. Illustration entries may be of any size, shape, or fo...