First of all, you need to think about the process you are using for t-shirt at the stage when you designing t-shirt. Or you will go crazy sooner or later.
Each process has it's own limitations. Pros and cons and there is no point if you try to force something just cause you have something in your head. You need to think about that, before you print your design.
Second, it will be much easier to help you if you add picture of the ''problem''
third, the more info you give, the easier it is from forum members to help you. That goes even for what cutter you are using, what vinyl and so on.
I did combine 2 different process on one t-shirt but I didn't do any dots
So back to your problem. You are talking about dots. Well what kinda dots?
We got many different dots