Dad and mom, I show my gratitude that you give my life.(稍正规)
Dad and mom, I thank you to give my life.(口语)
Dad and mom, I show my gratitude that you bless with my life.(非常正规)
我觉得Thank you for bringing me to this world 好点。你的也没错,就是the改成my吧,thanks 改成thank you好一点,一般英文里越长越正式。
你这里用的是祈使句的话,好像还是直接用thank you for比较顺口
thanks是名词,不能用于祈使句的开头