Yes, all winning skins will be aviable in the store.
Here is the details: "For this competition, winning items will be sold in the in-game store with 30% of profits paid directly to the creators of those items. The remaining revenue will be split as follows: (a) 30% will be paid to Valve (Steam fixed revenue share), (b) 20% of the revenue share will go towards the funding of the Company of Heroes 2 ESL Tournament Prize pool, and (c) the remaining 20% will be paid to SEGA / Relic".
Very nice, you must be very proud of your designs! Wondering, did you base them off any actual camos from ww2, or were you just messing around until you found something that looked cool?