When it comes to drawing art for other people and giving gifts. It is fully the right of the artist to draw for whoever they want. ​They should not be bullied or guilted by other people, even their friends, to draw them a similar picture or just a picture in general because that the artists drew something for someone else. That is abusing a friendship and only using them for their talents. If an artist wants to draw you, they will. There is no law that says they have to, so be grateful when it happens and don't complain when someone gets something that you don't.