Literal:
* The sunset painted the sky ablaze with fiery oranges and reds.
* The burning building was ablaze with flames.
* The bonfire crackled and roared, its flames ablaze.
Figurative:
* Her eyes were ablaze with anger.
* The city was ablaze with the excitement of the holiday season.
* The athlete's spirit was ablaze with determination.
Using "set ablaze":
* The arsonist set the abandoned warehouse ablaze.
* The passionate speech set the crowd ablaze with enthusiasm.
* The news of the victory set the team's hearts ablaze.
The best way to use "ablaze" in a sentence will depend on the context and the desired effect.