I've never converted them myself, but it wouldn't be hard to make a quality rendition from the WOMT.
Tools:
Hobby knife
Greenstuff/your favorite sculpting putty
sculpting tool
1 toothpick
1. Use the knife to shave the wings off of the helmet and the tree off of the breastplate & shield. Be careful not to put too much pressure on the blade - otherwise you might accidentally cut yourself (ask me how I know
)
(Optional: If you're careful, you can cut off the bulk of the shoulders & later replace them with chain mail, but I honestly think that's more trouble than it's worth - and less believable than proper shoulder guards anyway.)
2. Use the knife to cut the nose-guard from the helmet and the leg-guards off of the thighs. Start by cutting a line between the lames & the breastplate, that way you can come under and simply cut the bulk of it free without risking your fingers.
3. Use your putty to repair any damage to the tabbard under the leg-guards. After that's cured, use the toothpick to turn a ribbon of putty into chainmail at the bottom of the breastplate.
4. Use a bit of putty & the sculpting tool to make the... the... Whatever the heck those bandannas are called on their helmets. Anyone can make the doughnut version that GW did, so don't worry about your skill level. With some practice, you can work out something far better even.
5? If you like, you can take a shot at sculpting the diamond-wreath-and-stars design on the shields, but painting that on is probably as easy.
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Smite the iron, shape the pewter, sculpt the putty.
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