This is usually done on the basis that the lower court judge erred in the application of law, but it may also be possible to appeal on the basis of court misconduct, or that a finding of fact was entirely unreasonable to make on the evidence.
ðɪs ɪz jˈuːʒuːəli dˈʌn ɔnðə bˈeɪsɪs ðætðə lˈoʊɚ kˈoːɹt dʒˈʌdʒ ˈɜːd ɪnðɪ ˌæplɪkˈeɪʃən ʌv lˈɔː, bˌʌt ɪt mˈeɪ ˈɔːlsoʊ biː pˈɑːsᵻbəl tʊ ɐpˈiːl ɔnðə bˈeɪsɪs ʌv kˈoːɹt mɪskˈɑːndʌkt, ɔːɹ ðˌæɾə fˈaɪndɪŋ ʌv fˈækt wʌz ɛntˈaɪɚli ʌnɹˈiːzənəbəl tə mˌeɪk ɔnðɪ ˈɛvɪdəns.