Assessment 1 - prose seems to fit the marks, offers you some advice, particularly on positioning, but 73 seems right for the wording.
Assessment 2 - Plenty of development on positioning again and a bit more conviction on arm signals would help as well. Another excellent advantage it seems, well done. Few kit issues and it seems to imply you missed a caution for "several late challenges" by a player, but does compliment your match control once again. To me, it reads AOL 3 (maybe 3.5), MC 3.5, P/W 3, A/A 3.5, C 3.5, T 3.5, A 4, giving you 68 or maybe 70.
Assessment 3 - offers areas for improvement in AOL and wanted you a bit sharper on recognising potential trouble in MC, but is satisfied with positioning which the first two weren't as happy about. Getting people back on awarding a free kick was a concern in A/A, and don't overuse the whistle! Make sure that you don't confuse maintaining possession for advantage as well. Again no mark at the bottom but reads as 3.5 in each competency section to me, giving you 70.
To conclude, match control and advantage seem consistently good, but positioning, application of law and occasionally communication need development, which you can always work and improve upon. If my marks are correct, you're probably averaging around 71 so you could bump your average up in your final two assessments if you heed the assessor's advice. If you don't manage 73 average, another year at L5 will make you a better referee.
As you're going for level 4, at Supply level assessments I would suggest they read somewhere between 65-70. Assessment 1 would be a 70, Assessment 2 would also be around 69/70 (due to incorrect kit and a missed caution, which loses you 0.5 mark each on AOL), and Assessment 3 would also be about 68-70. Maybe that's not a fair comparison as I'm going off a county assessment report on a county game (and I'm not a Supply League assessor) but it's always good to see how you'd stack up at the next level, particularly as it could be you at Level 4 in a year or two. Maybe Brian or lincs22 would disagree with my marking....