There are thousands among thousands of existing papercraft models to choose from. What you want to remotely control is totally up to you. However there is always a few things to keep in mind
- Keep it simple. Don't go all out if you aren't familiar with etiher sides of the spectrum
- Know the limitations. the individual features of an ironman suit may be possible but it will not fit in a regular sized model
- Commit. Taking on a paper model is a tedious task. Brining it to life seamlessly takes level of engineering and creativity.
understand what you are capable of bringing to the model. what mechanisms already exist and how easily they are to implement. This takes experience. In other words don't go off building something impossible.
For example... I want my RC tankto have :
- full ground movement
- led stop light
- push to start
- rotating turret
- speed control