With regard to your poetry, I think there should be Jilla instead of jalla. I mean you typed جَلا it should be جِلا or it may be tabassum ki roshni jalla dena.It shouldn't be tabassum ki roshni ki jalla dena.
If it is tabassum ki roshni jala dena then it's meaning i think is:

By singing a song creat or develop a scene that make me happy.
اپنے گیت سے مسکُراہٹ کو زندگی دینا یا مسکراہٹ پیدا کرنا

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