@Magicalking, congratulations on the new business decision, and I hope that some customers will decide to pay with Bitcoin 
I would advise you to put these notices in color and not in black and white, and still invest a little more in the design - and if possible put up a floor bulletin board that can be seen by everyone passing in front of the store. I don't know if you do any online or physical advertising of your store, but it would be good to promote this business move so that as many people as possible find out that there is a store that accepts Bitcoin as a means of payment.
Here is a list of what I have done please tell me if I am missing anything. Suggestions will be appreciated
I would advise you to put these notices in color and not in black and white, and still invest a little more in the design - and if possible put up a floor bulletin board that can be seen by everyone passing in front of the store. I don't know if you do any online or physical advertising of your store, but it would be good to promote this business move so that as many people as possible find out that there is a store that accepts Bitcoin as a means of payment.