Studying

私はまいにち日本語をべんきょうします。

<em>Your sentence translates in English as, "I study Japanese everyday", which is perfectly fine! However, if, or some reason, you also want to say, "I am studying Japanese everyday", as in a continuous tense, then it would be like this=> </em>私はまいにち日本語をべんきょうしています。

日本語は美しいですからペラペラ話せるようにがんばってくださいね！(Japanese is a beautiful language so do your best in order to become fluent in speaking it!)...(^_^)