I have a Bachelor's in Economics(graduated in 2018) and I have pretty low percentage(around 53). I wanted to apply to a computer science post graduate diploma because I really like this field and also have an year of experience in Full stack developement as well. What things can I mention in my Statement of Purpose to make my application more strong for both visa as well as application process. Also, did any of you guys able to get admission while going for the field change?