Your sentence is almost correct, but it needs a small fix to sound natural. Here's your sentence:
"They call me a killer whale. So scary I am!"
This is understandable, but native English speakers usually say it differently. Here’s a better way to say it:
"They call me a killer whale because I am so scary!"
Or, if you want to keep it like two sentences:
"They call me a killer whale. I am so scary!"
Explanation:
- "So scary I am!" is not a natural word order in English. We usually say "I am so scary!"
- Adding "because" connects the two sentences nicely.
Great job expressing your idea! Keep practicing and you’ll get even better!