Tan, I'm a total sewing unco, and overlockers are fine! The pain is roughly cutting the shapes of your material! I HATE cutting! Last time I made trifolds (yes, squares, how hard), I got my mum to cut.

Def go some wipes though, flannelette's pretty low-risk.

ETA: Yep Tan, the big ones! If your machine's pre-threaded, just tie the new threads onto the ends and slowly move through. Easy. You might have to undo the knots for the two top needles, shouldn't need to for the bottom ones though! You could even use a different colour for one or both of the bottom threader thingos (very technical language here), to have pretty edging! I have green in one of mine at the moment!