If you intend to sell your art pieces, it will need total engagement from you. And it will take a lot of energy as well. But here's the good news. Usually visitors interested in buying your work will approach you and tell you exactly what they want. Then your job will be to seal the deal in the shortest time possible. If such a case happens to me, I would say that's great.
When would you like to do the transaction I would allow the buyer to define his or her needs and schedule as well and I will ensure to make it happen at an appropriate moment at opening itself. Keep in mind that you have to balance the time you spend with buyers and other visitors who are potential buyers. While it is great if potential Buyers approach you should also do your best in looking for other possible buyers who might be a little bit indecisive. Remember, selling starts with interacting with your guests. If a visitor shows interest in your artwork, be engaged with him or her and do your best to secure a sale. So here's my approach and tips.
I would usually do the first step and go towards the guests. I would approach guests by asking them what is their favorite work from the show? This helps me start a conversation. Additionally, I would spice up the conversation with a story behind each piece, and I would give technical insights as appropriate. Now let's check what you have to take care of when sealing the deal with a buyer. You will have to ensure that the artwork selling contract is properly filled and signed by both parties.
You will also need to issue an invoice as appropriate. As well you will have to define the payment method, date of handover of the artwork and the delivery method. It is usual that the sold artwork is handed over at the end of an exhibition period. For less patient buyers who want to enjoy the acquisition as early as possible, you will have to agree and arrange for a handover before the end date of the exhibition. In such a case, the location may ask you to hang a replacement artwork in order not to have empty walls