Shopping question. i need help please?

so i was going to buy this black silk one shoulder dress and the one shoulder has really pretty flowers on it. unfortunitly they only sell online. i have somewhat big arms. do u think it will look good on me? here is the dress :) http://www3.jcpenney.com/jcp/X6.aspx?DeptID=50455&CatID=51773&GrpTyp=PRD&ItemID=186d15d&attrtype=&attrvalue=&CMID=50455%7c51280%7c51773&Fltr=&Srt=&QL=F&IND=29&cmVirtualCat=&CmCatId=50455|51280|51773... thank u guys.