When you're new to making calls your focus should be on sound. The urge to make a beautiful and shiny call is strong, we've all been there. But do yourself a favor and get a can of teak oil and go with that. On a finely sanded call, an oil finish will absolutely look great. Plus it is very durable, won't flake off in a couple months and in my experience guys that hunt a lot and know calls will want an oil finish as opposed to a clear coat finish such as spar, laquer, CA, etc. All you have to do is soak the call in the can of oil for hours or even a day or two. Take it out, wipe it completely dry. In a day or so it'll be dry. You can even buff it to make the shine pop a little. Be careful with the rags with any oil based finish, as they can combust spontaneously if not properly dealt with.