Since this is your first Sharingan bio, we will start at the basics. What is the Sharingan, how is it gained, and in what ways are the eye abilities divided? What skills does use of the Sharingan augment and what are the various levels of it?
Canonically and as is recognized in the RP, the Sharingan is the unique and iconic Doujutsu of the Uchiha clan, serving as a distinct identifier of their ranks. Unlike most abilities throughout the verse, the Sharingan has a particularly estranged method of acquisition and enhancement, requiring that the user of the Doujutsu to undergo a process of severe trauma or stress in order for it to truly awaken, starting at the single tomoe variant. From there, each subsequent tomoe -up to 3 total- is unlocked through perpetual use and honing of the user's capacity with the Sharingan. Of course there is also the Mangekyō Sharingan and the Eternal variant, but given that's still a ways off for me, I'm going to assume we are solely focusing on the basic 1-3 tomoe iteration of the Doujutsu.
The abilities of the Sharingan are rather diverse, though primarily they serve first and foremost as a functional enhancement of the user's senses and tracking capabilities. With regard to senses, it allows for the user to perceive the flow of chakra, specifically through a process that is described as "giving color to chakra," in which this enables the user to differentiate and identify chakras from differing sources, be it other people or inanimate objects/techniques. Because of this perceptive capacity of chakra and being able to identify its sources from one to another, the Sharingan has a particular keen capacity to pierce through illusionary projections such as Genjutsu, making it extremely difficult to ensnare a Sharingan user in a Genjutsu, unlike non-Sharingan users. It's worth noting that while chakra visualization is something of a similar effect that the Byakugan provides to its respective users, the distinct difference between the two Doujutsu is that the Byakugan is capable of extending into much further distances and can "pierce" through much denser solid obstacles and masses in order to continue its perceptive capabilities, whereas the Sharingan is more "close"-range in nature, not having nearly as much of a robust visual reach as the Byakugan.
Additionally, due to the same enhancement to their perceptive capabilities and visual prowess bestowed through it, Sharingan users become capable of reading and tracking even the most incredible of speeds down to the most minor of details, of which affords them the capacity to effectively predict and foresee things like attacks, traps, even that of hand seals that are being used by their opposition. To compound upon this rapid traceability of their targets, the Sharingan affords the user comprehensive capabilities of what it is they are perceiving, allowing for them to not merely memorize what was done, but quite literally replicate and mimic it, as long as it is something the user ought to be able to perform in the first place, thus serving as the root reason for where the Sharingan's translated name "copy wheel eye" is coined from.
Then, as is widely known, the Sharingan is extensively associated with that of Genjutsu and the illusionary arts as a whole; particularly in the form of mind and reality-perception manipulation. This is frequently done through the process of direct eye contact with that of the target, in which creates a unique invisible projective tether between that of the Sharingan user and their target in which allows for the user to then effectively manipulate and influence the target's chakra flow through the Sharingan itself. These Sharingan-induced Genjutsu are notably more advanced and complex, or more "real" than ordinary Genjutsu, capable of far greater feats that are more difficult to counter or break free of, but of course the prerequisite of direct eye contact is often a very tricky thing to make happen, thus serving as the scale balancer to this particular power.
