Good work. Smoothly is an adverb, not an adjective. Moreover, for comparative adjectives the general rule is that adjectives with one syllable take an -er at the end of the word: old => older, fast => faster; the same goes for adjectives with two syllables finishing in -y: happy => happier, easy => easier. For adjectives with two syllables and not finishing with -y and adjectives with 3 or more syllables you use “more”: pleasant => more pleasant, expensive => more expensive. Regarding your pronunciation, don’t forget to pronounce the “s” at the end of all plurals and verbs ending with “s” (you forgot it for “rooms” and “smells”).