No problem, just remember cosplay is about having fun at the end of the day! Cosplay modelling is most likely rather different to what you're used to then if your past experience is centered around pin-up artistry, however both forms of modelling have the same goal - embodying a character and making it come to life on the final print page - don't be afraid to inject a bit more of your own emotions into your work. Experiment a little, relax and have fun Hope things go well for you down this road.