dry on glass sheets

squeegee the print of water
place print face up on vertical glass sheet and use watercolor tape to stick the print from the edges to the glass

once dry the print can be cut away from the glass

you have to be careful not to over wet the tape, if its to wet the print can get stuck to the glass

i only use this method for all my fibre, and the result is perfect flat prints

easy and cheap

white watercolor tape is the best, 2 euro for a huge roll