The part of a sentence "I feel so excited" is correct and usable in written English. You can use it when you are feeling excited about something, or when you are expressing enthusiasm. For example, "I feel so excited - I just found out I got the job I applied for!".
I have mixed feelings about the film - I feel so excited for the band and the music, but repulsed by the idea of people watching a film about my family.
"I feel so excited," he said.
"I feel so excited -- absolutely awesome," she said.
I feel so excited to make a difference".
Another supporter, Anne McLain, said: "I felt so excited.
I felt so excited because for me it was a chance to answer a few people who didn't believe in me as much as I did.
I felt bad all the time, and thought every minute my time would come; I felt so excited that I hardly knew what I was about, and felt worse than dead".
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.
Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com