Making marks on paper can be quite exhilarating,  my natural marks are soft organic sweeps curving this way and that so have tried making more liner marks on one of my 3o minute doodles recently and really enjoyed the difference.  I am loving the pastels and have been experimenting with the different sanded pastel papers, they do appear to hold the pastels well which allows for many layers to be applied. Have used the the 240 and the 800 grit, quite a marked difference and wasn’t keen on the roughest one at all, seemed to end up with definite stripe effect to the finished work   I have been using Unison and Jackson’s hand-made soft pastels, to he honest I cannot really tell the difference as yet..