A few weeks back when my mom's garden first started to bloom I was able to get out and do a few sketches. Here is a quick and easy process share on how I like to draw rose buds.
Start with two lines for the stem. Add a tear drop shape on top. Draw lines to indicate the petals. Open the tear drop shape by erasing the line connecting the bud to the stem.
That's pretty much it! You can now add shading and more details. Shading is kinda like coloring with a pencil. Use a light hand and shade or color in where you see dark areas on the flower. I drew another example with different petals. Break it down to the stem, bud, petals, and shading.
I straightened up the stems and used curved lines on the bud to show shadows. Don't forget to use your eraser to open the form and give a realistic look. I drew small triangle shapes for the leafy bits hanging off the bud. Flick your pencil up and away to get a nice tip on the top of the bud. Have a reference photo or the real thing close for observation.
I'd love to hear from you. Let me know if this was helpful!
My other drawing tutorials.

Did you miss my last post? Mermaid sketch!