I have a question for all of you master flavor artists

Because of this thread I have ordered the following from VZ:
Chocolate, Strawberry, Raspberry, Peach. I also order a 50/50 24mg unflavored base. Here's the thing, I'm nervous lol. I love just basic flavors but I do want flavor. I would also like to add chocolate to the raspberry and the strawberry. I have been reading and reading. I would like to make 15ml bottles. I like a sweeter, very flavorful vape. I would be completely grateful to anyone who can tell me what percentage to start with on my first try. I love this thread by the way, I read it all the time. Thanks to everyone who contributes. You are so much help to newbies like me and we are grateful to all of you who put your time into these threads for us.