"looks great" is a correct and usable phrase in written English. You can use it to express approval or admiration for something. For example: "The decorations for the party look great!".
That fabric looks great".
"She looks great".
He always looks great.
He looks great.
Trenton looks great.
The show looks great.
"And it looks great.
Being a terminologist, I care about word choice. Ludwig simply helps me pick the best words for any translation. Five stars!
Maria Pia Montoro
Terminologist and Q/A Analyst @ Translation Centre for the Bodies of the European Union