Oh wow what a good submission you have here. I love a good "SWIMSUIT" picture of a cartoon girl or just any girl really. I think that you took a nice character from "FAMILY GUY" and made it really work here. I would not have known of Gina if I did not look it up, but then I remembered what she was all about. She was a gold-digger and you've got her looking very sexual and hungry and that is often associated with gold-diggers. I think the body you've displayed here is a good match from her cartoon shape given on the show and it is good for her personality type. I like the color of the swimsuit as it really compliments the skin tones you've chosen here. I do also love the way she appears to be inviting you in with your eyes. The eyes are great and really match with the original cartoon concept. I love the way she is just staring you down. I do find the body a bit too muscular and that isn't a thing in Family Guy. Now that isn't a bad thing but it doesn't really work here, I would tone down her muscles a bit for me and that is really all I have to say in terms of changes. I do like this one don't get me wrong. I just find that for the show the characters were never really that big or buff, but this may be one of those open to interpretation. I do like the background as well as it is a nice theme to go along with a swimsuit, as an obvious choice of the given theme. You have some good talent here and I hope you do more of these fanarts from cartoons. It is always interesting to see what you change or leave when it comes to something like a cartoon character that is well known. I do like this and think you've done a great job.
~~THINGS TO IMPROVE ON~~
Tone down on the muscular body of this character as she is never really this muscular to being with and more of a slim lady.