Depending on what country you are from you can apply for IEC, that would allow you to work in Canada. Having at least 1 year Canadian work exp will add to your points.i'm 24 years old, btech, 3+ years work ex (best possible for CRS) and have maxed out my IELTS score. my CRS is at 441. i'm sure there are many on the same boat. how could we improve our scores? apart from getting married or taking TEF or doing an other diploma/masters, as these things will take at least an other 1.5-2 years...
Another option is to get a degree qualification.