plastering round corner beading?

[wese]

this is the problem i have,after putting up corner beads,when it comes to plastering,to get it nice and square i find i have to use quite alot to build it up to create a sqare corner,i use a square to check it.

the problem being is that i tend to cover quite alot of the window frame/achitrive,which does not look right,what am i doing wrong,if i make it thin,then it is not square

cheers

 

[jbonding]

what beads are you using

 

[wese]

i buy them from wicks,23mm each side if thats any help

 

[jbonding]

are they skim beads or float beads.

 

[wese]

hope u get this photo,think i have done it right lol

 

[jbonding]

these are skim beads used for plasterboards or for reskimming walls they nail on, then theres float beads which you set then float too, what job were you doing?