thats coming on well,
you'll be the only one who notices the corner as you did the work, others won't, but worst case scenario you could always re wrap it.
as for the switches if you use a fine scalpel you can trim round the switch areas and hand grip for a neater finish.
the dash isn't to bad, but the key is the prep work, it needs to be clean and wiped down with something like lighter fluid to de grease and remove any contaminantes from cleaning products etc.