put the negative directly onto the emulsion side of the paper and a sheet of glass to keep it all in contact and nice and flat.then expose with filtered light from the enlsrger;doneobviously you need a larger negative for this, but the results are typically beter than an enlarged small negative;no grain;better tonality; well worth a try for LF-camera owners4x5 is a min size i'm afraid8x10 and larger are spectacular;dodging and burning can be a bit tricky.