That's awesome, and glad to hear you've had some experience.

The main two (three) best pieces of advice I can give you are 1. Have Fun! 2. Never ever compare your work with anyone else - models aren't hard, but like any craft it takes practice to get proficient. There's no point comparing your early builds with a guy that's been modelling for 30 years. 3.... what was three... Oh yes, take your time, test fit, practice, ask questions and most of all - have fun!