Here are some of the tips i would give you to move further.
Online Quran Reciters
There are number of websites online which provide Quran recitations of different Reciters. By listening them again and again you will surely improve your accent by trying it yourself. Listen carefully and practice.
Tajweed is set of rules you should follow while reading Holy Quran. Learning Tajweed takes time. I would recommend you register yourself with some Quran Institute to learn from a tutor. You can learn it yourself too through free lessons available on Youtube and pdf guides available on Google.
If you want to learn from a tutor. Try this link
Voice is Important
If you want to enjoy your recitation, Recite Holy Quran daily. If you haven’t Holy Quran at your home, you can read online. Many sites have Holy Quran available for the visitors to read. Keep Reading in loud voice for an hour. It should be done daily and you will soon see that you are improving.
Hope these tips will help you. Remember me in your prayers.