Good to read the comment from Chaskar. He is right. If you can talk to anyone of us from native Marathi you can pronounce it better. Keep it up. Shubhechha..

Thank you your advice. I'll try to practice again.

कोणता कोणतं is correct. फळ फळं - Here ळ should be shortened, you should not pronounce it FULL. Same thing applies to गोड and छान If you live chat with me i may be in a better position to explain. There you can hear a native pronounciation. keep it up though.