How Do You Spell IMPROVE UP ON?

Correct spelling for the English word "improve up on" is [ɪmpɹˈuːv ˌʌp ˈɒn], [ɪmpɹˈuːv ˌʌp ˈɒn], [ɪ_m_p_ɹ_ˈuː_v ˌʌ_p ˈɒ_n] (IPA phonetic alphabet).