Yes, to make iron man's suit you need power. The glowing circle i the middle of his chest is his suit's power source. So you need to find a portable power source strong enough to power the suit. This...
If you had the right equipment and tools then probably YES. If you wish to build your own iron man suit, then you would have to talk to a guy who is in university or a man who is into Technology....
In back to the future, doctor Brown used a lighting strike to get the required 21 gigawatts to power the time machine, so if you could store the energy of a lightning strike then you would have...