T-shirt laser dark on top of Koncert T

[MadHatterGraphix 1,258]

Well I was told by neenah and some other sources that I could not press Laser dark on top of Image Clip Koncert T transfer paper. I was told it would turn everything grey and not come out right. I decided to do my own test on made this shirt. I will admit lining up the two papers was a pain and was not accomplished however It didnt turn anything grey or light grey. I have a question also how would you go about getting this to line up better heat transfer tape as a guide?