Yeah, I remember the first time I traveled alone. It wasn't a long journey but it had me thrilled and a bit(somewhat) nervous at the same time, to be honest.

Yeah, I remember the first time I traveled alone. It wasn't a long journey but it had me thrilled and a bit nervous too, to be honest.

The mistake in the sentence is the use of "by" instead of "but". The word "but" is needed to introduce a contrast between the two clauses. Corrected sentence: "Yeah, I remember the first time I traveled alone. It wasn't a long journey, but it had me thrilled and a bit nervous also, to be honest." Additional suggestions: Other possible improvements: - You could replace "also" with "too" to make the sentence sound smoother: "It wasn't a long journey, but it had me thrilled and a bit nervous too."