Of course after you have sketched and imagined the encounter the way you think it would be most creative; you have to test it by developing a mockup of the encounter in Diablo III Gold. Mockup can be done by coding the encounter into truth without considering its actual physical and graphical aspects, but rather if it would be functional and possible.
After you have assured that the display action is functional and possible, the next phase would be to introduce audio and style. This would rather quit wasting time if you have believed about every aspect of the encounter from the very first phase. After you have successfully incorporated your mockup with the audio and style, the display action should be tested again to see if it operates accordingly to your first strategy and style.
The last touches of the encounter can only and should only be done if you have completed the integration of Guild Wars 2 Gold, style, and audio, if so, you can finish your action by adding the ultimate touches such as preloaders, action introduction, prologue, credits, etc. this way you will see the encounter finished accordingly to your style and strategy with satisfactory and assured game playing high quality.