I have always been an illustrator. However sometime during my ffreelancing carreer I’d have to do commissions that I don’t normally do. One example is design. Designing a social media ad is not one of my favorite tasks but I have to do it if a client requests one.
Of course I need to measure my capabilities if it is doable. I mean I need to make sure that I can easilry research it or at least ask advise from people that can help me do it. Oftentimes I am successful.
So I guess my advise to other freelancers is that, try to consider going out your comfort zone, It will help you grow as an artist and an extra skill is not bad at all.