Hello sage68, welcome to Psych Central.

From what you have written I can see you have the potential, drive and ambition to do exactly what you want to do. Just remember that experience comes from learning from your mistakes so do not be too hard on yourself along the road. You have been offered a great opportunity, they are not expecting you to know everything, just keen to learn. Your social skills will improve as you join the real world but do not look down on those that work at McDonalds, it may be in the future that you need to work somewhere like that in order to get money together to pursue your interests in your projects. So, go for it! Unless you try it, you won't know.