Nice one. So if you lay neat really waste of time speedskim. Only time I use speed skim if it through it on trowel marks everywhereSo I put on with a 14 Marshall town I then flatten with a 1200 speedskim then tidy up with my 18 my.
Bosh a tight second coat on then flatten off with 18 and let that all start firming up then I start to use the plastic.
The trick with the plastic is to use it 1 less than you think.
Mine dont shine up at all. Flat and Matt
Also I lay on neat so I dont really need to flatten in between coats but I do it purely because I have always done it and get consistent results