Hi Lotty,
There is a club here of people that you could join who feel the same way about Matisse so you're not alone lol. I felt the same way until I tried it and found the process wasn't so bad .. I even enjoyed myself .. but I'm not about to do a repeat performance soon lol.
As for your painting, I think you've done well .. you outlined the structures and highlighted the important elements. Although the red doesn't show up dramatically against the orange, if you look at the original, neither do his outlines so I'd say you're in the right zone with that . Good job IMHO :)
Congrats for finishing this challenge and sharing it with us,
Maddy :)