to make a place, food etc (more) beautiful (by placing ornaments on or in it)

beautify, embellish

(to cause something) to become larger

make or grow bigger; increase

to make (an event, painting etc (more) lively

inspire, vitalize

to improve something in quality, flavour etc (using something)

improve, embellish

to put energy, strength, into (workers, a scheme etc)

energize