Logo designed - style of architects sketch

Information for the business: Charitable event
Type of logo: Pictorial mark
Brand name/slogan in logo: Drivers for Change
Number of revisions: 1
Ideas for the visual style: Front on bus with icons surrounding it
Preferred colors: Black & white (sketch)
Where the design will be used: Website, social media, printed marketing materials
Extra notes: I am working on the development of the brand for a new charitable project. We have already had a logo designed that we are happy with, but one of the funders has suggested we make a variation to the style. Currently the logo is a simple design including various icons - the feedback from the funder is that it is too 'clip-arty'. So we'd like a version of it using the same components and layout, but in the style of an architects sketch.

It shouldn't take very long as we just need a version for comparison purposes to show the funder. If we like the new style we might pay to have further forms created e.g. in colour, as an avatar for twitter etc. and we might also ask for other graphics to be drawn in a similar style.

We need someone who is good at drawing to do this. Ideally the work will be completed this weekend as we are on quite a tight timeline.