So, just in case you didn't see my post concerning dynamics, I was introduced to them personally a few days ago. So far, I managed to have a fair amount of control, but still having problems applying the right pressure and timing at some fast parts in some pieces.
This is one of them, which has been troubling me for the past 2 days:

These fingerings for the beams are not "natural" from me, I changed them today and I have been trying to play that way because it seems easier to give clarity to the notes while playing quickly, unlike the previous "natural" fingering which seemed much harder and made me hit other keys accidentally.
Yet, the clarity is not good enough, and right after hitting the first chord at ff, I usually play that part and end up stumbling or playing with not enough clarity (the notes seem to "gasp" and fade away too quickly). Its been so far the hardest part to fix. Do you have any tips? Progress made has been awfully slow for such a small sequence.
ps: The staff notation is in D major (F# and C#), its part of the freely available Canon in D (Oborin), from this same site.
Thank you ! : P