Wow, I wasn't gone that long was I - so many replies!! Thank you all!
Stan2323 - good tip, might do that, not like the vinyl adhesive is going to dry out.
MaximRecoil, yes I am using t-molding, but want to around the corner on the sides and under the t-molding if you see what I mean. Also, I am using vinyl for all the front and back panels too, so for them thought it would finish better if I go around to the back of the wood panel, will give a nice clean edge up against the sides rather than trying to cut there.
Wavryder, I tried warming the vinyl last night as even after priming and sanding when the vinyl goes on it is not perfectly smooth, if the iron was too hot it stuck to the vinyl, if it was cooler it scratched the vinyl. I tried a tea cloth in between and that didn't seem to do anything. Maybe I need a bed sheet or something less thick?
Fozzy, I have just sourced craft mount at my local art shop - thanks for that, will give it a try instead of surfacemount.
I am still testing pieces without the laminate on top, i.e. just test pieces of printed vinyl, so my issue will only get worse when it is laminated, i.e. to try and go around the corner. I may try scoring it somehow.
Ex