Here's an overall shot of what I have now:
I did remove the tow cable and replaced it by a thinner one, for which I also had to use different eyes:
Because the old cable was threaded through the front and rear clamps and was partly glued to them, I had to cut those off the model. Fortunately, I have a bunch of those from Tiger Models in grey resin, so that was not a big deal.
And now the canvas cover is done, I could continue adding details to the turret:
The lifting eyes, periscope covers and folded-down support for the machine gun barrel are from Asuka, the periscope brush guard dfrom RFM (I think), and the covered machine gun (which is not glued on yet) on the back is also by Tiger Models. To make sure it won't break off, I drilled out the support for it, inserted a bit of 1 mm brass rod, and glued that into a corresponding hole I drilled into the back of the turret. To the loader's hatch, I added a grab handle (not visible), and I need to add some more details to the turret before it's done.