I actually like it, as in one hit the potential customer see's a reasonable amount of shots, thus getting a feeling for how good you are. This may make the difference vs other togs .....remember a lot of people don't like to ask for extra proof of shots etc, so if oyu have a multiple vs just 1 from another person, it could be the clincher.
Have you also thought of backing up cards with small photo booklets of your shots, for those that you feel are more serious in their enquiries (you could always handout & ask for return) . Once again this could set you apart form the rest ? Feel free to use free offer we have on Pixalo for photo booklet & ask friends for feedback if this option works ( & no pressure to use our service moving forward
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Best of luck on venture Colin & if you shoot any near Gloucestershire, happy to be your backup man for some experience .....all in Mono of course