I did a little of this some time ago. It was all done through upwork, a company I’d trust if I was going to do more.
In terms of pitfalls, biggest one to my mind if you’re UK-based is the taxman! Be very aware of the obligations there … I forget most of what I learned back when I did a bit of freelancing, but there’s stuff like registering as a sole trader and submitting accounts (for which you’ll likely need an accountant so bear those fees in mind as well when setting your rates).
I really enjoyed certain aspects of freelancing, but to me getting work was a bit of a challenge … on upwork there are a lot of very low priced competition in parts of the world where the cost of living is so much less than here. It really takes time to build your business/reputation. However, as you’re doing work for a friend of a friend, you may not be so bothered with that right now, but down the line it may be more a consideration … I’d say I had like a 95% rejection rate for my pitches. When you’re working for yourself, that’s tough … and all you can do is keep smiling and go after the next job!
Good luck, relly hope it works out. Freelancing is on my radar to consider again in the future as it has many, many upsides as well Long lunch anyone Golfing all afternoon sound interesting