Do you plan to continue to live with your parents? If so, then you will probably be fine if your mom helps sponsoring. They look at household income in addition to personal income.
If you plan to move out soon on your own, you'll definitely want to boost your income, even with a sponsor. There are some cases where people are denied even with a sponsor since they have low income and have previously been on welfare.
Assets contribute to income too, so remember to add up any savings you may have too.