So here's his life time, so far, in just 19 images:
Marcel aged 8wks, 1yr, 2yrs, 3yrs, 4yrs
Marcel aged 5yrs, 6yrs, 7yrs, 8yrs, 9yrs, 10yrs
Marcel aged 11yrs, 12yrs, 13yrs,14yrs,15yrs
Marcel aged 16 yrs, 17yrs and finally 4 wks short of 18 yrs.
It's funny. I can still see baby Marcel in them all. I think the biggest jump in a year, well after the first one anyway, is between 11 and 12... It looks like the next 18 months might see some interesting changes in his little brother in that case, as he is about to hit ten!