innamal a'malu binniyat
Actions are judged by intentions.
Good intentions get rewarded even if you do not do any action. Bad intentions are only penalized if you do bad intentions. (not directly related but useful to know)
If you attempt to read it and your niyyah (intention) is good, you will get the ajr (blessings). If you are worried about your pronounciation, take lessons and do the best you can.
Hazrat Bilal was an Ethiopian slave and his pronounciation of Azan was different from that of a native Arab, and yet our beloved Prophet PBUP liked his Azaan more than anyone else.
Later on, some people suggested that this honor should be given to someone else, because Bilal could not pronounce the Arabic letter 'sheen' properly and instead used the letter 'seen' (the two sounds had merged in "s" in classical Ge'ez). It is reported that Muhammad said, "The 'seen' of Bilal is 'sheen' in the hearing of God," meaning that God does not see the physical manifestation; He appreciates the purity of heart. This saying of Muhammad is held to be contentious by scholars of hadith, with almost all of them grading it as baseless. Bilal felt deep love for Muhammad, and he is quoted as reciting some lines of poetry in his own language, in praise of Muhammad. One verse translated:
"When noble traits are described in our country, thou art pointed out as a model among us."