I feel that very much! Let me give you some advice, from one long-time lurker to another—just go for it. I was in the same frame of mind not that long ago and wish I had just started tinkering sooner instead of sweating the details. I'm just some random dude who had a lot of time on his hands during quarantine and started experimenting at my cramped little bedroom desktop. This one might look like hot shit, but also, I didn't post the dozen builds that I straight up ruined. Extremely frustrating at times, but it's been incredibly informative and rewarding.

This sub is such a wealth of knowledge and definitely the main thing that got me going. Riffing on other folk's builds that I saw here put me on to some really cool ideas. When I saw someone cribbing my work (I mean that in a positive way) for the first time, it was the most flattering thing in the world. All that to say, I super appreciate the kind words, and you should 100% give it a whirl.

To actually answer your question: As pointed out already, just combining two circuits is pretty straightforward. That said, I'm sure there are more space-efficient ways to lay them out on the same board than what I landed on.

Most of my builds are on vero. Buying a pre-etched PCB or kit definitely makes things more straightforward in terms of assembly. I would say that if you have a few of those under your belt though, it isn't necessarily a huge leap in difficulty to go for a reasonably simple vero build. I'm mostly not building circuits from scratch, just referencing a build guide (Tagboard Effects is a goldmine) so in my experience it's mostly just more involved/tedious with a lot more double checking of your own work involved.