1, looking for more shells: Go to the nearby beach or ocean area to look for more shells. In this way, a sufficient number of shells can be added to complete beading.

2. Rearrange the design of beading: If the beading design can accommodate different numbers of shells, you can rearrange the order of shells or change the structure of beading to adapt to the remaining seven shells.

3. Make other handicrafts: If you can't find enough shells to complete beading, you can consider using these shells to make other handicrafts, such as necklaces, earrings and bracelets. In this way, we can make full use of the shells at hand and create other beautiful objects.