as long as the fabric is prepared for printing and you let the ink set and really dry( cure) then heat set they should be ok= either use PFD fabric (prepared for dyeing) or prewash fabric---no fabric softener- there are a couple different products on the market- like bubble jet set--
that can be used- but i've done fine with washed muslin (no fabric softeners= no starch- no additives...
adhere to the freezer paper= make sure the edges are very well stuck- so your fabric does not come loose and roll up in the printer!
let them cure---heat set= rinse with cold water===expect some ink to run through= there is always excess- the picture should still be clear though.