You are obviously putting in the time and practise to progress. Great time of year to work on carving.
I have used India Ink with good results for the ageing effect if you are interested in trying a variation. If you want to try smoothing some cut marks, Festool make some great little curved edge tools that are not very expensive. (Home Depot) I have also tried a different technique on the branch scars, take a shingle nail and tap it into the end of the cut multiple times about 1/2 to 3/4 inch deep. Use needle nose pliers or strong tweezers to pull out some fibers randomly. When aged and wire brushed, looks like natural decay. This hemlock had a large branch low down on the larger trunk pointing directly forward until removal and treating. just another idea. It is still a bit dark from recent work, but i expect it to fade in the sun this summer. There is a smaller one above on the same trunk that shows the effect of missing fibres more clearly at this stage. Just some thoughts to play with.