For your first covering job you did real good. I agree covering compound curves and such are not easy. There is a "trick" to some of it. After a while you will learn how the covering streaches and shrinks and how to pull it around and cut it so you get the finish you want. I also find covering very similar to painting. In painting the final product is only as good as your surface prep. Covering is the same way.

One other trick to a good finish it to understand what steps in the assembly process you can postpone until the parts are covered. Doing this helps eliminate how many compound curves and fillets and so forth you have to cover. Fins and stabilzers are prime for waiting to install and glue in until after they and the fuse are covered. The same goes for wing covers and so forth. Cover them and then cut away the covering where needed to epoxy them in place. Yes use epoxy. CA will fog covering.