1)Are they fleshed and dried skin side out, first? (before fur side out)
2)If they are fleshed and dried, Why so many pins in the tail at this point?
Are you skipping the flip and using Borax then boarding? (reason for tail pinned) If you are skipping the flip, I suggest using another wedge up the back for more air or using adjustable boards for better air flow.
3)Far right Grey, just looks wet or greasy at the skirt.
4)Far left Grey- eye holes & ears don't look centered. Board may be tilted a bit to give me this impression.
If pictured hide is fleshed and dried and put on boards fur out, I do this...
-I look for blood I may have missed. I will put Borax on blood spot and rub in and comb out.
-I may/may not put 1 pin on the end of the tail.
-I do comb out the fur, then comb upwards, rump to head, every hair (teased upwards) even neck & around ears/chin, belly & legs. By combing fur upwards, as the hide further dries, the fur will stay standing and fur combed this way presents a beautiful appearance.
All in all they look good, but need combed upward and prettied up in the skirt and neck area.
I like your uniformed look by using the same size boards.
Nice job.