Answer: It’s alright.
Step-by-step explanation:
A tanka poem is 5 lines with 5/7 words:
Line 1: 5 words
Line 2: 7 words
Line 3: 5 words
Line 4: 7 words
Line 5 7 words
So far I don’t see any grammar mistakes.
This is an option but maybe replace some words with new ones? (You don’t have to do that btw). For example, you could replace “really” with words like undeniably, awfully, and certainly.