@ebikeerwidnes Your right hand crank will come off without any difficulty with an 8mm (I think) allen key, unscrewing 'normally'. The pedal can stay on. There should be no obstruction to removing the chainguard to offer you unfettered access to the chainring for cleaning. Refitting the crank will also be straightforward (NB at 180 degrees to the left crank
) and then just tighten the hex-socket headed bolt tight tight (I'd use a smidgen of grease on its thread). And ride/motor on.
Ignore the irrelevant (to you) chat/noise on here about removing pedals.
As well as artistic talent
@kynikos clearly has a grip of things, which is just as well.