Deep joy - Butternut Squash

At my second attempt have managed to cultivate 4 seedlings.  They are near the kitchen windowsill, so do I now take them down to the plot and put in the cold frame?  They seem to be leaning towards the light and as I have never got this far before, dont know what is the next step

If they've only just germimated, GF, I'd let them grow quite a bit bigger before starting to harden them off in the cold frame.  Turn them regularly if poss so they don't always point in the same direction, put some alu foil behind them to reflect some light back.

Mine won't be hardened off for another week or two yet

Once you put them out they need quite a lot of space as they grow like triffids.  Stop them at four or five squashes and pray for lots of sunshine to ripen them, which it seems we might get this year.

I got some in loo roll tubes, none come up yet though they've been in 8 days. This my first time growing them.