A roof leak caused the plaster to crack in the ceiling area of my small bathroom about 2'-3" by 2'-10". I just hate to hire someone, if I could do the job. I know it is a lost art doing plaster but I did repair a smaller job in my living room ceiling the size of a dinner plate many years ago and it still looks pretty good. Also, could someone give me some instructions in doing this job since I am really a novice. Thanks so much for any advice given.