To make it so…

The verb shimasu します means ‘to do’. To say that someone made something fun, use the ‘ku form of the adjective and add します (shimasu).

Make it fun: たのしく します (tanoshiku shimasu).

Made it fun: たのしく しました (tanoshiku shimasita).

Make it easy: やさしく します (yasashiku shimasu).

Made it difficult: むずかしく しました (muzukashiku shimasita).

Adverbs

To use an ‘i’ adjective as an adverb, change the い (i) to く (ku):

interesting おもしろい (omoshiroi) becomes おもしろく (omoshiroku).

far とおい (tooi) becomes とおく (tooku).

bad  わるい (warui) becomes わるく (waruku).