Income is only one part of it. Mortgage lenders will review your employment, salary history, credit history, credit scores, savings, types of,outstanding debts and debt to income ratio. Lenders need a guarantee that your income is sufficient to pay for the mortgage, property taxes and homeowners insurance + your other monthly expenses.
Do you have cash for a down payment + cash to pay closing costs? Do you have 3 months of expenses in savings in case of job loss, medical crisis, etc.?
Now it's time to contact a lender and ask for a pre approval. After that contact a realtor and start visiting homes.