I can definitely see the resemblance that you spotted to the lips with that pic of Harrison Ford. However I think it is just all in the photograph.
For instance here is a different photo where I think I look like Tom Welling from Smallville:
In real life everyone seems to think that I look like a different actor...I have been likened to Ashton Kutcher, Josh Hartnett, and a whole bunch of others that I can't remember...
The truth is that I don't actually look like any one movie star...I look like all of them. Haha...nah, I look like **** in real life, you probably wouldn't even recognize me unless I started posting outtakes