The Eight of Pentacles is all about mastering your craft, often about work, but really anything related to the material, such as financial matters or health. So when this card reverses it can signify that something is amiss in this area. When the two of swords comes up with it, this can indicate that it is time to consider and decide what to do about it, perhaps before a decision is made for you.
The Six of Cups reversed can indicate that the past has too much of a hold over someone. That past might include trauma experienced in a family situation or a relationship. The Four of Pentacles reinforces this inability to let go.
The Sun is such a positive card of energy, vitality, happiness and success that when it is reversed the energy is more diminished than blocked or twisted. There may be clouds blocking the Sun, but it is still there trying to shine down on you.