I've successfully navigated the student visa process several times. The key is to show that you intend to go for studies alone and will be coming back to your home country. This can easily be done by showing proof of local home and funds. The interviewer must be satisfied you are not intending to stay back in the destination. Apart from this, stay confident on the day of the interview, take all the required forms and documents and follow instructions at the embassy carefully. I'm available to answer further questions related to this process. With best wishes!