I try to think of different ways I can take pictures to attract more people's attention when I sell things at the flea market.
ーI try to think of different ways I can take pictures to attract more people's attention when I sell things at the flea market.
「フリマに出品するとき、より多くの人々の注意を引くため、写真のいろいろな撮り方を工夫します」
to try to think of ways to ... を使って「…を工夫する」と表現できます。
to take pictures で「写真を撮る」
to attract someone's attention で「人の目に触れる・注意を引く・関心を集める」
to sell things at the flea market で「フリマで出品する」
ご参考まで!