So I played through all the contest missions.
Just My Luck is small and simple, but it has a charming quality to it and does some things not too often seen in Thief FMs. One little thing that was a bit annoying was the hiding place of the key to one important house, it was hidden very well and there were no hints to its whereabouts - well, ok, there was one hint, but it was inside the house and therefore only accessible after getting in. I liked the story behind it, even though I've seen the twist coming right after reading the very first readable. Readables are of good quality, the atmosphere is pretty good and colored lighting and ambients are used effectively to convey it. It was pretty linear but one of the buildings had two ways to access it, so that was a nice touch. Enjoyable mission, rated it "Solid to Good" and gave it a 6.5/10 score in Darkloader.
Shoes and Dresses... well, it's my own mission, but I'll still attempt to rate it. It has some obvious shortcomings like the overly simplistic architecture in the city section, most of which can be blamed on me trying out things in Dromed and not having enough time to polish it up before the deadline. It's probably the most varied and most sizeable mission in the contest, but that way it also suffers from a lack of focus compared to the other two entries. While the architectural detail is mostly similar to Just My Luck, Shoes and Dresses suffers from a lack of focus and having some areas that are too empty, so the simplicity of the architecture is more noticeable than in Just My Luck. It certainly would've benefitted from a tighter and more focused design, but the variety and several cool ideas make this worth playing. Rated it "Solid to Good" with a 6.5/10 in Darkloader.
Forgotten Tomb is primarily a puzzle mission with a cool little twist in the middle. I have to admit that I checked out Fen's Let's Play to solve some of the riddles that got me stuck for a while, but overall the puzzles aren't too hard. Basically, you break into a tomb and rob some shit and then try to get out again. It has two different endings based on whether you find a certain item or not, and it has a shitton of loot. The loot goal seems to be optional as you can finish the mission without reaching it, but it's implemented in a very questionable way: it merely tells you to find "most of the loot" in the crypt, without mentioning how much that is. And considering this mission has around 16k loot in total, you always keep wondering "ok, why the fuck didn't I reach the loot goal yet, how much of the stuff is there??". Visually and atmospherically, this is probably the best of all the contest entries: the architecture is more complex than in Shoes & Dresses and Just My Luck, and it uses ambients and custom objects for good effect. It looks really, really good. It also is the most challenging of the missions: here, there are some zombies that can't be knocked down with the sword, and you have only three water arrows so stealthing it is a challenge. Since I'm not too much into puzzle missions, I rated this one "Solid to Good" with a 6.5/10, too, just like the other two missions.
Overall, I'm going to guess that Forgotten Tomb will win the contest. Just my Luck and Shoes and Dresses are roughly on the same level, I would say, but Forgotten Tomb is just technically so much more impressive that it's bound to get the highest votes over at TTLG. It looks gorgeous, it has some technically involved puzzles that surpass anything the other two missions have (Just My Luck only has a bit of keyhunting, and Shoes and Dresses only has a simple switch puzzle - nothing even remotely approaching the puzzles in Forgotten Tomb), it even has two different endings based on whether you find and use a certain item or not. It also has to be the mission with the most loot ever, because there's more than 16000 in there, which is kinda funny because I thought my mission had quite a lot of loot compared to most.
I'm pretty certain Forgotten Tomb will reach the first place, while the other two will probably get roughly similar scores.