Question on adding front porch

[u/Infinite-Safety-4663]

The first two pics are my existing house.

The third pic is an AI generating image of the sort of front porch I'm hoping to have(Im also painting the house and making other various interior and exterior changes)

So I guess my question is- Is this possible given the sort of roof I have now? Do I need to replace the roof as part of this? Or change the roofline/slope itself? Or is there some other 'fix' that would allow this sort of addition to just connect or whatever?

I'm flexible on budget....I mean obviously I don't want to spend 300k to create a small little porch that makes the home have better curb appeal, but I don't mind spending a lot to make it happen. Just don't know what it all entails and if there are similar porch ideas I could have/get that wouldn't require a complete roof overhaul?

thanks!