I have made many hex quilts..never used a pattern..the size and number depends on the size of your hex..how big u want it ..using graft paper can help u see what u have in mind..or like I do..I just make one . To see..I sew it together as I go..I don't make many hexes then .sew them ..it is more interesting to me to see the growing of the quilt as I go..usually I decide the length..make a row and move to the next..unless u are doing a picture from hexes a pattern isn't really needed..but u can go to pinrest..and put in hex quilts ..u will get all kinds of pictures