What can I do to control my voice when I'm moving?

Every day, I would practise walking up and down the stairs while singing. If আপনি continue doing this then গান গাওয়া while moving becomes very simple! :)

I see what আপনি mean. I have to dance for my upcoming concert. I found that if আপনি keep practicing, আপনি learn to controll it better.

It's a প্রশ্ন of breathing. Your গান গাওয়া is shaking when আপনি সরানো because আপনি do not control your diaphragm (the muscle located at the midsection of your body). Train to control that muscle,then you'll control the debit of air আপনি let out and your voice won't shake any more. It'll take some time to achieve that result though. It took me months to do so when I learnt গান গাওয়া years ago.