Now that you have used markers for the first time the next stage is to practise and repeat the techniques - long flowing lines but on more complex shapes. You should start with the 2D Hand Held Whisk sheet. All of the concept ideas are mixtures of the basic shapes but with curved sides in many cases. The addition of buttons, handles, rounds, air vents etc. will test how you control the markers more effectively. The use of shadows is particularly important as well as subtle use of black pencil to get the depth with the markers.
Below is the example rendered sheet as well as a video demonstration. Below the video are a number of QR codes that can be scanned to see some of the hand held whisks in 3D. This is to try and help you understand the product and where the shadows form.
You can use these QR codes below to spin a 3D CAD model around and gain an idea of what the product should 'conceptually' look like in 3D, including shadows. If you scan in the QR code with your phone camera this will open up a 3D CAD model in AR (Augmented Reality).
Example of the Hand Held Whisk design ideas sheet digitally rendered
I like how I have rendered these two materials together and especially the use of shadow. I think that the orange and yellow green work well together.
I like how I have rendered this hand whisk and I like the way that the button, and button surround, break up the form on the split line. Perhaps the 'trigger' or press button on the handle could of been a different colour so it stands out a little more.
Once you have added colour / textures / materials you need to add final shadows and highlights to each of the designs to give them depth.
The example below (suspension spring) demonstrates really clearly the difference shadows and then highlights make to a marker pen sketch.
The image looks flat as there is no depth.
The image now has more depth as edges are darker. This creates a 2 1/2D rendering.
The image now has highlights where light would catch different sections. This makes it look more real
Once you have completed your rendered sheet you can use Gemini AI software to enhance your sheet further. If you load Gemini as a new tab in your browser and then click on the Tools at the bottom of the prompt box you can selected Create Images. If you then upload your completed sheet and write in the text prompt what you want it to do it can create amazing enhancements to your original work.
Below are some examples with prompts.