wa alaikum as salam wa rahmatullahi wa barakatuhu,
yes it looks, the letter ayn is fine.
You can practise words with ayn from this software,the website is
www.tanzil.net I will advise you to practise with sheikh Abdullah Basfar's recitation, as most tajweed teachers from saudia would tell you to practise from sheikh Abdullah Basfar's recitation. For practise of tajweed click basfar no.1. To practise lets say you listen to Juz Tabarak ( Juz no.29), start from surah Al-Mulk, listen to sheikh Basfar's recitation 12 times at least daily, this way you will improve in your tajweed, the more you will listen, the more you will improve inshAllah.
check here the makhraj of ayn >>
http://tajweedinenglish.com/images/stories/5.swf
you can check other letters also here>>>
http://tajweedinenglish.com/watch-the-video/watch-makharij-videos
Ayn is the second letter pronounced from the middle of the throat, but has more of a rolling sound. One Qur’an teacher described the sound as of that of a camel. It may not be practical for the reciter to find a camel and practice this sound that way, so listening to a Qur’an tape and trying to imitate the sound of the reciter will work well instead. from link>>
http://www.abouttajweed.com/articul...letters/the-articulation-points-of-the-t.html