You will get normal geckos that are het for blizzard and Tremper albino. They will likely have lots of nice speckles because that seems to be a by-product of the blizzard gene. If you breed the offspring to each other you will get some normals, some blizzards, some albinos and some albino blizzards.
You will have the genes in the babies but they will now SHOW. You will not be able to see them. However what you can do NEXT YEAR is breed back a child from that pair to mom or day and we will do an example here.
if MOM is a BLIZZARD and you breed a child back to mom you will possibly get blizzards 50 50 chance
if DAD was the albino and you breed a child back to DAD you have a 50 50 chance of getting a tremper albino
Now you could go further down the rabbit hole to try and get both genes to show but you will be breeding a few generations back and might want to bring in a new animal.