One more dream I have now is to open my own store someday.
One more big hope that I have for the future is to have my own shop someday.
どちらも「自分の店を出すという夢が一つ増えました。」という意味です。
1) One more dream I have now is to open my own store someday.
2) One more big hope that I have for the future is to have my own shop someday.
「もう一つの夢」は
one more dream I have
one more big hope that I have
と言うことができます。
ご参考になれば幸いです！
モロッコ 
日本 
