jamaican theme invitation card

My friends and I have this idea to make a graduation party for our seniors who will be graduated and soon will becoming doctor. Well, I decided to volunteer myself as the invitation card designer.Cause my creative brain is on her mood, so tonight I decided to make the card. Sorry if it's not good cause it's been pretty while since my last time using photoshop.  Actually we haven't really decided what the theme of party will be, but I had this imagination of jamaican beach party where all t the boys will wear hawaian shirt and the girls will wear a cute beach dress ( sorry if it's waay too far from the event). I think it would be great if we hold the party in a seafood restaurant that has beach atmosphere. Maybe later I will looking for a restaurant like this in Jogja, hope it won't be that hard to find the perfect spot. Any recommendation?