Should I publish my first paper in a conference? I am a Masters student. I wrote my first paper and sent it to a conference in Spain. To my surprise, they accepted my paper. Now I am hesitating, because I am afraid that my first work is not good enough. It will affect my future plan to study for a PhD. Should I publish it, or just cancel the conference submission and complete the paper to publish later in a journal?
Personally, I don't think that it is considered "bad" to publish a conference paper. Even less so, if it is your first paper. Nobody can expect you to release in a top journal of your subject all the time and especially not with your first article.

Where I am from you do not need to publish anything before your PhD, so I am not sure how important this is in your case. From my point of view, though, anything published is better than nothing (in this case at least).