I am progressing on my first Blender sculpt. I am currently modeling a crown for a statue of a king lying on a marble slab. Sculpting has progressed well so far as long as it consisted of a subdivided spheres.

For the crown, I decided to try modelling. I used a cylinder and I am modeling it for the first time. I would like;

1st; to extrude 2 small points upwards at the side of the crown. I extruded the vertices which I then connected. **How can I then add faces to the joined vertices?** Or is there a better way to produce the wanted points? the point you see in the photo was obtained withe the smoothing tool.
[![enter image description here](https://i.stack.imgur.com/SBHex.jpg)](https://i.stack.imgur.com/SBHex.jpg)

2nd; I would eventually like to sculpt some engravings in the crown. To do this I added a multiresolution modifier in the layout, in the hopes of adding enough subdivisions to be able to sculpt but the result with the draw brush in sculpting mode is terrible and worst when I put dyntopo on.

[![enter image description here](https://i.stack.imgur.com/F0yoM.jpg)](https://i.stack.imgur.com/F0yoM.jpg)  

multiresolution modifier applied.

[![enter image description here](https://i.stack.imgur.com/U1Q2G.jpg)](https://i.stack.imgur.com/U1Q2G.jpg)
Normal draw brush applied.

[![enter image description here](https://i.stack.imgur.com/fSVMc.jpg)](https://i.stack.imgur.com/fSVMc.jpg)
dyntopo draw brush applied

Thanks in advance for all the help you can give me.