When you get back to it. Start will low heat and gradually work it up intill you get it hot enough to just get the monocoat to stick. Small gradual steps. Once you get the whole peice covered you can use the heat gun to remove the wrinkles. Be careful around edges of monocoat with the heat gun. Also watch for warping by over heating the covering. It takes practice and your first job will look like poo. But you will learn from it and get better as you do more. This hobby has a huge learning curve and these 60 some odd year old guys in hear will tell you they are learning something new every day.

EDIT// for removing monocoat I will use the heat gun and an exacto knife. The knife is to lift the monocoat at an edge while I heat it and pull it away from the wood, not to cut the monocoat as you risk damaging the wood.