well i've done it

and i'm glad to say it came out pretty good
i done a test press on the padded strap as if it went wrong it could've been removed
the material was ok but the edging melted slightly at 160c
so i used the paper i had but noticed on the instructions it said at min 50% cotton
and when i pressed it and tried to remove the greaseproof the transfer came with it slightly
so i put another on top with an iron, made sure i lined it up exactly and it came out great thankfully
and the flex i used pressed brill and has stuck great too
pity i only had a dark red in flex though cos i think a lighter red would've looked better against the dark blue but hey ho
the customer was really happy with them and wants 10 more

woo hoo