hi, nice to hear you're venturing into modelling
well, there have been a lot of similar questions posted about this same topic, you should try doing a search, I will link you to a few
This are wm cheng great step by step build ups, although, it's not a direct link to what you ask for he explains in great detail all the modeling he does, as well what you're seeking for, my favorite is the YF-21 WIP, you should also do a search and check for DrunkenMaster2 build ups also, great stuff too
This are some useful weathering techniques
Modelling Tips useful tips here also
hope it helps, would like to see your projects in the future, good luck mate