Work safely, work safely, work safely, I can't stress this enough. Tools are not for kids without proper supervision. 

These models are not toys to play with even if they are fully functional.

The most important tools are patience, time, perseverance and satisfaction of doing something unique and gratifying that can be showcased anywhere. Give yourself credit and time, don't be overly critical and be prepared to start over.

Don't assemble your parts too fast, try them for fit often and do the gluing last. Don't rush, this is a hobby.

You may have to create many different pieces that fit together before a final assembly is done. Plan these ahead. Review the plan as there is no order specified on the plans to make the parts or for assembly.

Break down the list of parts into groups. You can then work on different sections of the model individually depending on the time and location you have. You would then set these aside until you need then for the final assembly stage.

Allow yourself time to study the plans. This is part of the process of building models.

Feel free to make changes to the plans, these are not absolute, they are guides. Add or leave out details as you see fit.

Research the real machines at the library or the web, use this information into your project.     

As the materials used are small and mostly soft wood, it does not lend well to conventional power tools; avoid them if you can.

If you use power tools, use care and good sense in the choice of blades and drill bits you use as the wood pieces are fragile and break easily.  

Jigs are not precision instruments and require adjusting and getting used to in order to achieve the desired results. Be prepared to spoil some pieces. Keep these just in case you run short later.

Always plan to make more than what you need.

If you plan to make other models that use the same parts, make these ahead of time while your jig is in place and working well. It takes more time to adjust the jig than what it takes to actually make the parts. 

Plan a special place for your finished models, preferably an area away from dust, liquids and humidity. They are not easily cleaned without breaking when dirty and won't operate well if humid.