10 .. more sand (yellow color) all the way down the wording and under beach ball too ... also make it bigger.... looks good small already but looks better bigger i bet. . .
a good rule of thumb. make it small , if it looks good then you got a winner. you can always make it big later. you WILL have it printed small at some point and if you chose the wrong one you'll regret it.
other comments script fonts suck imho... also make it harder to read small.
8 is ok as well . . . colors are good and font is ok ... graphic looks clipartish