I'm very sorry for my mistake,attached please find the new invoice.(在外贸函电中,最后一个分句已经有“随函附上。。。请查收”的意思,可能词典中没翻译“请查收”,但根据我这么久的外贸经验,是可以这样表达的)。
In order to deliver your goods,I'm waiting for Mrs. Gerhild Kasten's contact and your confirmation of the price.
"愿你一天好心情。"这句只是祝福语和一种礼貌,用哪一句都一样,一般客户都不会注意看,所以可随便表达:“All the best;The best wishes for you ,Hope you have a good day.......”